Discover the L'Oreal DIA Light Color Chart - your key to a world of mesmerizing haircolor possibilities! Explore a stunning array of shades, from cool to warm, designed to gloss, tone, and refresh your hair with an unmatched vinyl shine. With its gentle acidic formula and zero lift, Dia Light delivers intense care and gorgeous results, making it the ultimate choice for professionals seeking to enhance their clients' haircolor experience. Unleash your creativity and find the perfect hue to elevate your style to new heights with L'Oreal DiaLight Color Chart.

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L'OREAL - DIA LIGHT_Dialight Clear_Cosmetic World
L'OREAL - DIA LIGHT Dialight Clear $13.99
L'Oreal Dia Light Clear L’Oreal Professionnel DIA Light is an acidic demi-permanent gel-crème haircolor without ammonia used to gloss, tone, and refresh color. We recommend DIA Light be used after all lightening services. What does L’Oreal Professionnel DIA light do? Tone, gloss, refresh previously colored or sensitized hair Gentle acid technology smooths the cuticle for vinyl shine Provides intense care for the hair Provides zero lift Not for white coverage - for white coverage of up to 70% white, we recommend DIA Richesse What else do you need to know about L’Oreal Professionnel DIA light? A Must Have: Milkshake Shades - Cool shades in Level 9 and 10 are amazing to tone and gloss your blondes in just 2-10 minutes   L’Oreal Professionnel Diactivateur Developer Pro Tips You can use any DIActivateur Developer with DIA Light, but our Artists recommend: - 6-vol. DIActivateur Developer for your blondes - 9-vol. DIActivateur Developer for your brunettes - 15-vol DIActivateur Developer for your red heads & fashion shades   What can L’Oreal Professionnel DIA light be used for? - Corrective color/pre-coloration - Colormatch/refresh permanent haircolor - Refresh/tone highlights and Balayage - Lowlights How to use L’Oreal Professionnel DIA light Mixing ratio: 50 ml (1 tube) Dialight color + 75 ml Diactivateur (1,8% / 2,7% / 4,5%) Development time: 20 minutes (depending on the service provided by your professional hairdresser total service time may vary) In a bowl, bottle or shaker, mix the color and the developer until a homogenous mixture is formed. Apply on dry, unwashed hair. Leave for 20 minutes. Then massage and rinse well with water. Finally, wash your hair with shampoo for colored hair. PROFESSIONAL USE ONLY. The sale and use of this product is intended for licensed professionals only.  Cosmetic World will not be held responsible by anyone who buys and/or uses this product. Chemical products may cause allergic reactions, which in rare instances can be severe. Conduct sensitivity and allergic patch test 48 hours prior to each application. These products must not be used on eyelashes or eyebrows.
L'OREAL - DIA LIGHT_Dialight Liquifier 500ml / 16.9oz_Cosmetic World
L'OREAL - DIA LIGHT Dialight Liquifier $49.99
L'Oreal Dialight Liquifier 500ml / 16.9oz Clear additive to your DIALIGHT & DIACTIVATEUR mixture to liquefy for the best consistency and texture. Adjust mixture density and intensity to increase transparency & shine. Changes viscosity of DIALIGHT colors from gel-creme texture to creme texture. Gives you unlimited customization and needs. Work best with bottle applications. Directions Mix 1:1 with DIALIGHT hair color Mix the mixture in step one 1:1.5 with DIACTIVATEUR Apply as usual, best with bottle application
L'OREAL - DIA LIGHT_Dialight 4/4N Dark Brown_Cosmetic World
L'OREAL - DIA LIGHT Dialight 4/4N Dark Brown $13.99
L'Oreal Professionnel DIA Light 4/4N L’Oreal Professionnel DIA Light is an acidic demi-permanent gel-crème haircolor without ammonia used to gloss, tone, and refresh color. We recommend DIA Light be used after all lightening services. What does L’Oreal Professionnel DIA Light do? Tone, gloss, refresh previously colored or sensitized hair. Gentle acid technology smooths the cuticle for vinyl shine. Provides intense care for the hair. Provides zero lift. Not for white coverage - for white coverage of up to 70% white, we recommend DIA Richesse. Features and Benefits: Gentle Ammonia-Free Formula: L'Oreal DIA Light boasts an ammonia-free formula, ensuring a gentle coloring process that respects the hair's integrity. This means a comfortable and luxurious experience for your clients without compromising on results. Radiant, Long-Lasting Color: Delight your clients with vibrant, natural-looking color that stands the test of time. L'Oreal DIA Light offers fade-resistant shades, maintaining their brilliance and vibrancy between salon visits. Versatile Color Range: With an extensive spectrum of shades, L'Oreal DIALight offers unparalleled versatility for all hair types and styles. From soft and subtle to bold and striking, you can effortlessly achieve any desired look. Perfect for Creative Techniques: Whether you're contouring, highlighting, or adding dimension, L'Oreal DIA Light's precision and ease of use make it an ideal choice for creative coloring techniques. Even Coverage and Blending: L'Oreal Professionnel DIA Light ensures even color distribution, providing seamless blending for a natural finish. Achieve flawless results, making you the go-to stylist for impeccable color transformations. Enhanced Shine and Condition: Beyond color brilliance, DIALight infuses the hair with a luminous shine, leaving it soft, smooth, and beautifully conditioned. Efficient Application Process: Designed for efficiency, L'Oreal DIA Light is easy to mix and apply. This streamlines your salon services, saving time without compromising on quality. Discover the L'Oreal DIA Light Color Chart Achieve the best results by pairing DIALight with the recommended DIActivateur Developers PROFESSIONAL USE ONLY. The sale and use of this product is intended for licensed professionals only.  Cosmetic World will not be held responsible by anyone who buys and/or uses this product. Chemical products may cause allergic reactions, which in rare instances can be severe. Conduct sensitivity and allergic patch test 48 hours prior to each application. These products must not be used on eyelashes or eyebrows.
L'OREAL - DIA LIGHT_Dialight 5/5N Light Brown_Cosmetic World
L'OREAL - DIA LIGHT Dialight 5/5N Light Brown $13.99
L'Oreal Professionnel Dia Light 5/5N Light Brown L’Oreal Professionnel DIA Light is an acidic demi-permanent gel-crème haircolor without ammonia used to gloss, tone, and refresh color. We recommend DIA Light be used after all lightening services. What does L’Oreal Professionnel DIA Light do? Tone, gloss, refresh previously colored or sensitized hair. Gentle acid technology smooths the cuticle for vinyl shine. Provides intense care for the hair. Provides zero lift. Not for white coverage - for white coverage of up to 70% white, we recommend DIA Richesse. Features and Benefits: Gentle Ammonia-Free Formula: L'Oreal DIA Light boasts an ammonia-free formula, ensuring a gentle coloring process that respects the hair's integrity. This means a comfortable and luxurious experience for your clients without compromising on results. Radiant, Long-Lasting Color: Delight your clients with vibrant, natural-looking color that stands the test of time. L'Oreal DIA Light offers fade-resistant shades, maintaining their brilliance and vibrancy between salon visits. Versatile Color Range: With an extensive spectrum of shades, L'Oreal DIALight offers unparalleled versatility for all hair types and styles. From soft and subtle to bold and striking, you can effortlessly achieve any desired look. Perfect for Creative Techniques: Whether you're contouring, highlighting, or adding dimension, L'Oreal DIA Light's precision and ease of use make it an ideal choice for creative coloring techniques. Even Coverage and Blending: L'Oreal Professionnel DIA Light ensures even color distribution, providing seamless blending for a natural finish. Achieve flawless results, making you the go-to stylist for impeccable color transformations. Enhanced Shine and Condition: Beyond color brilliance, DIALight infuses the hair with a luminous shine, leaving it soft, smooth, and beautifully conditioned. Efficient Application Process: Designed for efficiency, L'Oreal DIA Light is easy to mix and apply. This streamlines your salon services, saving time without compromising on quality. Discover the L'Oreal DIA Light Color Chart Achieve the best results by pairing DIALight with the recommended DIActivateur Developers PROFESSIONAL USE ONLY. The sale and use of this product is intended for licensed professionals only.  Cosmetic World will not be held responsible by anyone who buys and/or uses this product. Chemical products may cause allergic reactions, which in rare instances can be severe. Conduct sensitivity and allergic patch test 48 hours prior to each application. These products must not be used on eyelashes or eyebrows.
L'OREAL - DIA LIGHT_Dialight 6/6N dark Blonde Fonce_Cosmetic World
L'OREAL - DIA LIGHT Dialight 6/6N dark Blonde Fonce $13.99
L'Oreal Professionnel Dialight 6/6N Light Brown Blonde Fonce L’Oreal Professionnel DIA Light is an acidic demi-permanent gel-crème haircolor without ammonia used to gloss, tone, and refresh color. We recommend DIA Light be used after all lightening services. What does L’Oreal Professionnel DIA Light do? Tone, gloss, refresh previously colored or sensitized hair. Gentle acid technology smooths the cuticle for vinyl shine. Provides intense care for the hair. Provides zero lift. Not for white coverage - for white coverage of up to 70% white, we recommend DIA Richesse. Features and Benefits: Gentle Ammonia-Free Formula: L'Oreal DIA Light boasts an ammonia-free formula, ensuring a gentle coloring process that respects the hair's integrity. This means a comfortable and luxurious experience for your clients without compromising on results. Radiant, Long-Lasting Color: Delight your clients with vibrant, natural-looking color that stands the test of time. L'Oreal DIA Light offers fade-resistant shades, maintaining their brilliance and vibrancy between salon visits. Versatile Color Range: With an extensive spectrum of shades, L'Oreal DIALight offers unparalleled versatility for all hair types and styles. From soft and subtle to bold and striking, you can effortlessly achieve any desired look. Perfect for Creative Techniques: Whether you're contouring, highlighting, or adding dimension, L'Oreal DIA Light's precision and ease of use make it an ideal choice for creative coloring techniques. Even Coverage and Blending: L'Oreal Professionnel DIA Light ensures even color distribution, providing seamless blending for a natural finish. Achieve flawless results, making you the go-to stylist for impeccable color transformations. Enhanced Shine and Condition: Beyond color brilliance, DIALight infuses the hair with a luminous shine, leaving it soft, smooth, and beautifully conditioned. Efficient Application Process: Designed for efficiency, L'Oreal DIA Light is easy to mix and apply. This streamlines your salon services, saving time without compromising on quality. Discover the L'Oreal DIA Light Color Chart Achieve the best results by pairing DIALight with the recommended DIActivateur Developers PROFESSIONAL USE ONLY. The sale and use of this product is intended for licensed professionals only.  Cosmetic World will not be held responsible by anyone who buys and/or uses this product. Chemical products may cause allergic reactions, which in rare instances can be severe. Conduct sensitivity and allergic patch test 48 hours prior to each application. These products must not be used on eyelashes or eyebrows.
L'OREAL - DIA LIGHT_Dialight 7/7N Dark Blonde_Cosmetic World
L'OREAL - DIA LIGHT Dialight 7/7N Dark Blonde $13.99
L'Oreal Professionnel Dia Light 7/7N Dark Blonde L’Oreal Professionnel DIA Light is an acidic demi-permanent gel-crème haircolor without ammonia used to gloss, tone, and refresh color. We recommend DIA Light be used after all lightening services. What does L’Oreal Professionnel DIA Light do? Tone, gloss, refresh previously colored or sensitized hair. Gentle acid technology smooths the cuticle for vinyl shine. Provides intense care for the hair. Provides zero lift. Not for white coverage - for white coverage of up to 70% white, we recommend DIA Richesse. Features and Benefits: Gentle Ammonia-Free Formula: L'Oreal DIA Light boasts an ammonia-free formula, ensuring a gentle coloring process that respects the hair's integrity. This means a comfortable and luxurious experience for your clients without compromising on results. Radiant, Long-Lasting Color: Delight your clients with vibrant, natural-looking color that stands the test of time. L'Oreal DIA Light offers fade-resistant shades, maintaining their brilliance and vibrancy between salon visits. Versatile Color Range: With an extensive spectrum of shades, L'Oreal DIALight offers unparalleled versatility for all hair types and styles. From soft and subtle to bold and striking, you can effortlessly achieve any desired look. Perfect for Creative Techniques: Whether you're contouring, highlighting, or adding dimension, L'Oreal DIA Light's precision and ease of use make it an ideal choice for creative coloring techniques. Even Coverage and Blending: L'Oreal Professionnel DIA Light ensures even color distribution, providing seamless blending for a natural finish. Achieve flawless results, making you the go-to stylist for impeccable color transformations. Enhanced Shine and Condition: Beyond color brilliance, DIALight infuses the hair with a luminous shine, leaving it soft, smooth, and beautifully conditioned. Efficient Application Process: Designed for efficiency, L'Oreal DIA Light is easy to mix and apply. This streamlines your salon services, saving time without compromising on quality. Discover the L'Oreal DIA Light Color Chart Achieve the best results by pairing DIALight with the recommended DIActivateur Developers PROFESSIONAL USE ONLY. The sale and use of this product is intended for licensed professionals only.  Cosmetic World will not be held responsible by anyone who buys and/or uses this product. Chemical products may cause allergic reactions, which in rare instances can be severe. Conduct sensitivity and allergic patch test 48 hours prior to each application. These products must not be used on eyelashes or eyebrows.
L'OREAL - DIA LIGHT_Dialight 8/8N Blonde_Cosmetic World
L'OREAL - DIA LIGHT Dialight 8/8N Blonde $13.99
L'Oreal Professionnel Dia Light 8/8N Blonde L’Oreal Professionnel DIA Light is an acidic demi-permanent gel-crème haircolor without ammonia used to gloss, tone, and refresh color. We recommend DIA Light be used after all lightening services. What does L’Oreal Professionnel DIA Light do? Tone, gloss, refresh previously colored or sensitized hair. Gentle acid technology smooths the cuticle for vinyl shine. Provides intense care for the hair. Provides zero lift. Not for white coverage - for white coverage of up to 70% white, we recommend DIA Richesse. Features and Benefits: Gentle Ammonia-Free Formula: L'Oreal DIA Light boasts an ammonia-free formula, ensuring a gentle coloring process that respects the hair's integrity. This means a comfortable and luxurious experience for your clients without compromising on results. Radiant, Long-Lasting Color: Delight your clients with vibrant, natural-looking color that stands the test of time. L'Oreal DIA Light offers fade-resistant shades, maintaining their brilliance and vibrancy between salon visits. Versatile Color Range: With an extensive spectrum of shades, L'Oreal DIALight offers unparalleled versatility for all hair types and styles. From soft and subtle to bold and striking, you can effortlessly achieve any desired look. Perfect for Creative Techniques: Whether you're contouring, highlighting, or adding dimension, L'Oreal DIA Light's precision and ease of use make it an ideal choice for creative coloring techniques. Even Coverage and Blending: L'Oreal Professionnel DIA Light ensures even color distribution, providing seamless blending for a natural finish. Achieve flawless results, making you the go-to stylist for impeccable color transformations. Enhanced Shine and Condition: Beyond color brilliance, DIALight infuses the hair with a luminous shine, leaving it soft, smooth, and beautifully conditioned. Efficient Application Process: Designed for efficiency, L'Oreal DIA Light is easy to mix and apply. This streamlines your salon services, saving time without compromising on quality. Discover the L'Oreal DIA Light Color Chart Achieve the best results by pairing DIALight with the recommended DIActivateur Developers PROFESSIONAL USE ONLY. The sale and use of this product is intended for licensed professionals only.  Cosmetic World will not be held responsible by anyone who buys and/or uses this product. Chemical products may cause allergic reactions, which in rare instances can be severe. Conduct sensitivity and allergic patch test 48 hours prior to each application. These products must not be used on eyelashes or eyebrows.
L'OREAL - DIA LIGHT_Dialight 9/9N Light Blonde_Cosmetic World
L'OREAL - DIA LIGHT Dialight 9/9N Light Blonde $13.99
L'Oreal Dia Light 9/9N Light Blonde L’Oreal Professionnel DIA Light is an acidic demi-permanent gel-crème haircolor without ammonia used to gloss, tone, and refresh color. We recommend DIA Light be used after all lightening services. What does L’Oreal Professionnel DIA Light do? Tone, gloss, refresh previously colored or sensitized hair. Gentle acid technology smooths the cuticle for vinyl shine. Provides intense care for the hair. Provides zero lift. Not for white coverage - for white coverage of up to 70% white, we recommend DIA Richesse. Features and Benefits: Gentle Ammonia-Free Formula: L'Oreal DIA Light boasts an ammonia-free formula, ensuring a gentle coloring process that respects the hair's integrity. This means a comfortable and luxurious experience for your clients without compromising on results. Radiant, Long-Lasting Color: Delight your clients with vibrant, natural-looking color that stands the test of time. L'Oreal DIA Light offers fade-resistant shades, maintaining their brilliance and vibrancy between salon visits. Versatile Color Range: With an extensive spectrum of shades, L'Oreal DIALight offers unparalleled versatility for all hair types and styles. From soft and subtle to bold and striking, you can effortlessly achieve any desired look. Perfect for Creative Techniques: Whether you're contouring, highlighting, or adding dimension, L'Oreal DIA Light's precision and ease of use make it an ideal choice for creative coloring techniques. Even Coverage and Blending: L'Oreal Professionnel DIA Light ensures even color distribution, providing seamless blending for a natural finish. Achieve flawless results, making you the go-to stylist for impeccable color transformations. Enhanced Shine and Condition: Beyond color brilliance, DIALight infuses the hair with a luminous shine, leaving it soft, smooth, and beautifully conditioned. Efficient Application Process: Designed for efficiency, L'Oreal DIA Light is easy to mix and apply. This streamlines your salon services, saving time without compromising on quality. Discover the L'Oreal DIA Light Color Chart Achieve the best results by pairing DIALight with the recommended DIActivateur Developers PROFESSIONAL USE ONLY. The sale and use of this product is intended for licensed professionals only.  Cosmetic World will not be held responsible by anyone who buys and/or uses this product. Chemical products may cause allergic reactions, which in rare instances can be severe. Conduct sensitivity and allergic patch test 48 hours prior to each application. These products must not be used on eyelashes or eyebrows.
L'OREAL - DIA LIGHT_Dialight 4.15/4BRV_Cosmetic World
L'OREAL - DIA LIGHT Dialight 4.15/4BRV $13.99
L'Oreal Professionnel Dia Light 4.15/4BRV L’Oreal Professionnel DIA Light is an acidic demi-permanent gel-crème haircolor without ammonia used to gloss, tone, and refresh color. We recommend DIA Light be used after all lightening services. What does L’Oreal Professionnel DIA Light do? Tone, gloss, refresh previously colored or sensitized hair. Gentle acid technology smooths the cuticle for vinyl shine. Provides intense care for the hair. Provides zero lift. Not for white coverage - for white coverage of up to 70% white, we recommend DIA Richesse. Features and Benefits: Gentle Ammonia-Free Formula: L'Oreal DIA Light boasts an ammonia-free formula, ensuring a gentle coloring process that respects the hair's integrity. This means a comfortable and luxurious experience for your clients without compromising on results. Radiant, Long-Lasting Color: Delight your clients with vibrant, natural-looking color that stands the test of time. L'Oreal DIA Light offers fade-resistant shades, maintaining their brilliance and vibrancy between salon visits. Versatile Color Range: With an extensive spectrum of shades, L'Oreal DIALight offers unparalleled versatility for all hair types and styles. From soft and subtle to bold and striking, you can effortlessly achieve any desired look. Perfect for Creative Techniques: Whether you're contouring, highlighting, or adding dimension, L'Oreal DIA Light's precision and ease of use make it an ideal choice for creative coloring techniques. Even Coverage and Blending: L'Oreal Professionnel DIA Light ensures even color distribution, providing seamless blending for a natural finish. Achieve flawless results, making you the go-to stylist for impeccable color transformations. Enhanced Shine and Condition: Beyond color brilliance, DIALight infuses the hair with a luminous shine, leaving it soft, smooth, and beautifully conditioned. Efficient Application Process: Designed for efficiency, L'Oreal DIA Light is easy to mix and apply. This streamlines your salon services, saving time without compromising on quality. Discover the L'Oreal DIA Light Color Chart Achieve the best results by pairing DIALight with the recommended DIActivateur Developers PROFESSIONAL USE ONLY. The sale and use of this product is intended for licensed professionals only.  Cosmetic World will not be held responsible by anyone who buys and/or uses this product. Chemical products may cause allergic reactions, which in rare instances can be severe. Conduct sensitivity and allergic patch test 48 hours prior to each application. These products must not be used on eyelashes or eyebrows.
L'OREAL - DIA LIGHT_Dialight 4.20/4VVV_Cosmetic World
L'OREAL - DIA LIGHT Dialight 4.20/4VVV $13.99
L'Oreal Professionnel Dia Light 4.20/4VVV L’Oreal Professionnel DIA Light is an acidic demi-permanent gel-crème haircolor without ammonia used to gloss, tone, and refresh color. We recommend DIA Light be used after all lightening services. What does L’Oreal Professionnel DIA Light do? Tone, gloss, refresh previously colored or sensitized hair. Gentle acid technology smooths the cuticle for vinyl shine. Provides intense care for the hair. Provides zero lift. Not for white coverage - for white coverage of up to 70% white, we recommend DIA Richesse. Features and Benefits: Gentle Ammonia-Free Formula: L'Oreal DIA Light boasts an ammonia-free formula, ensuring a gentle coloring process that respects the hair's integrity. This means a comfortable and luxurious experience for your clients without compromising on results. Radiant, Long-Lasting Color: Delight your clients with vibrant, natural-looking color that stands the test of time. L'Oreal DIA Light offers fade-resistant shades, maintaining their brilliance and vibrancy between salon visits. Versatile Color Range: With an extensive spectrum of shades, L'Oreal DIALight offers unparalleled versatility for all hair types and styles. From soft and subtle to bold and striking, you can effortlessly achieve any desired look. Perfect for Creative Techniques: Whether you're contouring, highlighting, or adding dimension, L'Oreal DIA Light's precision and ease of use make it an ideal choice for creative coloring techniques. Even Coverage and Blending: L'Oreal Professionnel DIA Light ensures even color distribution, providing seamless blending for a natural finish. Achieve flawless results, making you the go-to stylist for impeccable color transformations. Enhanced Shine and Condition: Beyond color brilliance, DIALight infuses the hair with a luminous shine, leaving it soft, smooth, and beautifully conditioned. Efficient Application Process: Designed for efficiency, L'Oreal DIA Light is easy to mix and apply. This streamlines your salon services, saving time without compromising on quality. Discover the L'Oreal DIA Light Color Chart Achieve the best results by pairing DIALight with the recommended DIActivateur Developers PROFESSIONAL USE ONLY. The sale and use of this product is intended for licensed professionals only.  Cosmetic World will not be held responsible by anyone who buys and/or uses this product. Chemical products may cause allergic reactions, which in rare instances can be severe. Conduct sensitivity and allergic patch test 48 hours prior to each application. These products must not be used on eyelashes or eyebrows.
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L'OREAL - DIA LIGHT_Dialight 4.35/4GRV Dark Chestnut_Cosmetic World
L'OREAL - DIA LIGHT Dialight 4.35/4GRV Dark Chestnut $13.99
L'Oreal Dia Light 4.35/4GRV Dark Chestnut L’Oreal Professionnel DIA Light is an acidic demi-permanent gel-crème haircolor without ammonia used to gloss, tone, and refresh color. We recommend DIA Light be used after all lightening services. What does L’Oreal Professionnel DIA Light do? Tone, gloss, refresh previously colored or sensitized hair. Gentle acid technology smooths the cuticle for vinyl shine. Provides intense care for the hair. Provides zero lift. Not for white coverage - for white coverage of up to 70% white, we recommend DIA Richesse. Features and Benefits: Gentle Ammonia-Free Formula: L'Oreal DIA Light boasts an ammonia-free formula, ensuring a gentle coloring process that respects the hair's integrity. This means a comfortable and luxurious experience for your clients without compromising on results. Radiant, Long-Lasting Color: Delight your clients with vibrant, natural-looking color that stands the test of time. L'Oreal DIA Light offers fade-resistant shades, maintaining their brilliance and vibrancy between salon visits. Versatile Color Range: With an extensive spectrum of shades, L'Oreal DIALight offers unparalleled versatility for all hair types and styles. From soft and subtle to bold and striking, you can effortlessly achieve any desired look. Perfect for Creative Techniques: Whether you're contouring, highlighting, or adding dimension, L'Oreal DIA Light's precision and ease of use make it an ideal choice for creative coloring techniques. Even Coverage and Blending: L'Oreal Professionnel DIA Light ensures even color distribution, providing seamless blending for a natural finish. Achieve flawless results, making you the go-to stylist for impeccable color transformations. Enhanced Shine and Condition: Beyond color brilliance, DIALight infuses the hair with a luminous shine, leaving it soft, smooth, and beautifully conditioned. Efficient Application Process: Designed for efficiency, L'Oreal DIA Light is easy to mix and apply. This streamlines your salon services, saving time without compromising on quality. Discover the L'Oreal DIA Light Color Chart Achieve the best results by pairing DIALight with the recommended DIActivateur Developers PROFESSIONAL USE ONLY. The sale and use of this product is intended for licensed professionals only.  Cosmetic World will not be held responsible by anyone who buys and/or uses this product. Chemical products may cause allergic reactions, which in rare instances can be severe. Conduct sensitivity and allergic patch test 48 hours prior to each application. These products must not be used on eyelashes or eyebrows.
L'OREAL - DIA LIGHT_Dialight 4.65/4RRV_Cosmetic World
L'OREAL - DIA LIGHT Dialight 4.65/4RRV $13.99
L'Oreal Professionnel Dia Light 4.65/4RRV L’Oreal Professionnel DIA Light is an acidic demi-permanent gel-crème haircolor without ammonia used to gloss, tone, and refresh color. We recommend DIA Light be used after all lightening services. What does L’Oreal Professionnel DIA Light do? Tone, gloss, refresh previously colored or sensitized hair. Gentle acid technology smooths the cuticle for vinyl shine. Provides intense care for the hair. Provides zero lift. Not for white coverage - for white coverage of up to 70% white, we recommend DIA Richesse. Features and Benefits: Gentle Ammonia-Free Formula: L'Oreal DIA Light boasts an ammonia-free formula, ensuring a gentle coloring process that respects the hair's integrity. This means a comfortable and luxurious experience for your clients without compromising on results. Radiant, Long-Lasting Color: Delight your clients with vibrant, natural-looking color that stands the test of time. L'Oreal DIA Light offers fade-resistant shades, maintaining their brilliance and vibrancy between salon visits. Versatile Color Range: With an extensive spectrum of shades, L'Oreal DIALight offers unparalleled versatility for all hair types and styles. From soft and subtle to bold and striking, you can effortlessly achieve any desired look. Perfect for Creative Techniques: Whether you're contouring, highlighting, or adding dimension, L'Oreal DIA Light's precision and ease of use make it an ideal choice for creative coloring techniques. Even Coverage and Blending: L'Oreal Professionnel DIA Light ensures even color distribution, providing seamless blending for a natural finish. Achieve flawless results, making you the go-to stylist for impeccable color transformations. Enhanced Shine and Condition: Beyond color brilliance, DIALight infuses the hair with a luminous shine, leaving it soft, smooth, and beautifully conditioned. Efficient Application Process: Designed for efficiency, L'Oreal DIA Light is easy to mix and apply. This streamlines your salon services, saving time without compromising on quality. Discover the L'Oreal DIA Light Color Chart Achieve the best results by pairing DIALight with the recommended DIActivateur Developers PROFESSIONAL USE ONLY. The sale and use of this product is intended for licensed professionals only.  Cosmetic World will not be held responsible by anyone who buys and/or uses this product. Chemical products may cause allergic reactions, which in rare instances can be severe. Conduct sensitivity and allergic patch test 48 hours prior to each application. These products must not be used on eyelashes or eyebrows.
L'OREAL - DIA LIGHT_Dialight 5.07/5NGR Sage_Cosmetic World
L'OREAL - DIA LIGHT Dialight 5.07/5NGR Sage $13.99
L'Oreal Professionnel Dia Light 5.07/5NGR L’Oreal Professionnel DIA Light is an acidic demi-permanent gel-crème haircolor without ammonia used to gloss, tone, and refresh color. We recommend DIA Light be used after all lightening services. What does L’Oreal Professionnel DIA Light do? Tone, gloss, refresh previously colored or sensitized hair. Gentle acid technology smooths the cuticle for vinyl shine. Provides intense care for the hair. Provides zero lift. Not for white coverage - for white coverage of up to 70% white, we recommend DIA Richesse. Features and Benefits: Gentle Ammonia-Free Formula: L'Oreal DIA Light boasts an ammonia-free formula, ensuring a gentle coloring process that respects the hair's integrity. This means a comfortable and luxurious experience for your clients without compromising on results. Radiant, Long-Lasting Color: Delight your clients with vibrant, natural-looking color that stands the test of time. L'Oreal DIA Light offers fade-resistant shades, maintaining their brilliance and vibrancy between salon visits. Versatile Color Range: With an extensive spectrum of shades, L'Oreal DIALight offers unparalleled versatility for all hair types and styles. From soft and subtle to bold and striking, you can effortlessly achieve any desired look. Perfect for Creative Techniques: Whether you're contouring, highlighting, or adding dimension, L'Oreal DIA Light's precision and ease of use make it an ideal choice for creative coloring techniques. Even Coverage and Blending: L'Oreal Professionnel DIA Light ensures even color distribution, providing seamless blending for a natural finish. Achieve flawless results, making you the go-to stylist for impeccable color transformations. Enhanced Shine and Condition: Beyond color brilliance, DIALight infuses the hair with a luminous shine, leaving it soft, smooth, and beautifully conditioned. Efficient Application Process: Designed for efficiency, L'Oreal DIA Light is easy to mix and apply. This streamlines your salon services, saving time without compromising on quality. Discover the L'Oreal DIA Light Color Chart Achieve the best results by pairing DIALight with the recommended DIActivateur Developers PROFESSIONAL USE ONLY. The sale and use of this product is intended for licensed professionals only.  Cosmetic World will not be held responsible by anyone who buys and/or uses this product. Chemical products may cause allergic reactions, which in rare instances can be severe. Conduct sensitivity and allergic patch test 48 hours prior to each application. These products must not be used on eyelashes or eyebrows.
L'OREAL - DIA LIGHT_Dialight 5.1/5B Cool Smoked Walnut_Cosmetic World
L'OREAL - DIA LIGHT Dialight 5.1/5B Cool Smoked Walnut $13.99
L'Oreal Professionnel Dia Light 5.1/5B Cool Smoked Walnut L’Oreal Professionnel DIA Light is an acidic demi-permanent gel-crème haircolor without ammonia used to gloss, tone, and refresh color. We recommend DIA Light be used after all lightening services. What does L’Oreal Professionnel DIA Light do? Tone, gloss, refresh previously colored or sensitized hair. Gentle acid technology smooths the cuticle for vinyl shine. Provides intense care for the hair. Provides zero lift. Not for white coverage - for white coverage of up to 70% white, we recommend DIA Richesse. Features and Benefits: Gentle Ammonia-Free Formula: L'Oreal DIA Light boasts an ammonia-free formula, ensuring a gentle coloring process that respects the hair's integrity. This means a comfortable and luxurious experience for your clients without compromising on results. Radiant, Long-Lasting Color: Delight your clients with vibrant, natural-looking color that stands the test of time. L'Oreal DIA Light offers fade-resistant shades, maintaining their brilliance and vibrancy between salon visits. Versatile Color Range: With an extensive spectrum of shades, L'Oreal DIALight offers unparalleled versatility for all hair types and styles. From soft and subtle to bold and striking, you can effortlessly achieve any desired look. Perfect for Creative Techniques: Whether you're contouring, highlighting, or adding dimension, L'Oreal DIA Light's precision and ease of use make it an ideal choice for creative coloring techniques. Even Coverage and Blending: L'Oreal Professionnel DIA Light ensures even color distribution, providing seamless blending for a natural finish. Achieve flawless results, making you the go-to stylist for impeccable color transformations. Enhanced Shine and Condition: Beyond color brilliance, DIALight infuses the hair with a luminous shine, leaving it soft, smooth, and beautifully conditioned. Efficient Application Process: Designed for efficiency, L'Oreal DIA Light is easy to mix and apply. This streamlines your salon services, saving time without compromising on quality. Discover the L'Oreal DIA Light Color Chart Achieve the best results by pairing DIALight with the recommended DIActivateur Developers PROFESSIONAL USE ONLY. The sale and use of this product is intended for licensed professionals only.  Cosmetic World will not be held responsible by anyone who buys and/or uses this product. Chemical products may cause allergic reactions, which in rare instances can be severe. Conduct sensitivity and allergic patch test 48 hours prior to each application. These products must not be used on eyelashes or eyebrows.
L'OREAL - DIA LIGHT_Dialight 5.4/5C Copper Sunset_Cosmetic World
L'OREAL - DIA LIGHT Dialight 5.4/5C Copper Sunset $13.99
L'Oreal Dialight 5.4/5C Copper Sunset L’Oreal Professionnel DIA Light is an acidic demi-permanent gel-crème haircolor without ammonia used to gloss, tone, and refresh color. We recommend DIA Light be used after all lightening services. What does L’Oreal Professionnel DIA Light do? Tone, gloss, refresh previously colored or sensitized hair. Gentle acid technology smooths the cuticle for vinyl shine. Provides intense care for the hair. Provides zero lift. Not for white coverage - for white coverage of up to 70% white, we recommend DIA Richesse. Features and Benefits: Gentle Ammonia-Free Formula: L'Oreal DIA Light boasts an ammonia-free formula, ensuring a gentle coloring process that respects the hair's integrity. This means a comfortable and luxurious experience for your clients without compromising on results. Radiant, Long-Lasting Color: Delight your clients with vibrant, natural-looking color that stands the test of time. L'Oreal DIA Light offers fade-resistant shades, maintaining their brilliance and vibrancy between salon visits. Versatile Color Range: With an extensive spectrum of shades, L'Oreal DIALight offers unparalleled versatility for all hair types and styles. From soft and subtle to bold and striking, you can effortlessly achieve any desired look. Perfect for Creative Techniques: Whether you're contouring, highlighting, or adding dimension, L'Oreal DIA Light's precision and ease of use make it an ideal choice for creative coloring techniques. Even Coverage and Blending: L'Oreal Professionnel DIA Light ensures even color distribution, providing seamless blending for a natural finish. Achieve flawless results, making you the go-to stylist for impeccable color transformations. Enhanced Shine and Condition: Beyond color brilliance, DIALight infuses the hair with a luminous shine, leaving it soft, smooth, and beautifully conditioned. Efficient Application Process: Designed for efficiency, L'Oreal DIA Light is easy to mix and apply. This streamlines your salon services, saving time without compromising on quality. Discover the L'Oreal DIA Light Color Chart Achieve the best results by pairing DIALight with the recommended DIActivateur Developers PROFESSIONAL USE ONLY. The sale and use of this product is intended for licensed professionals only.  Cosmetic World will not be held responsible by anyone who buys and/or uses this product. Chemical products may cause allergic reactions, which in rare instances can be severe. Conduct sensitivity and allergic patch test 48 hours prior to each application. These products must not be used on eyelashes or eyebrows.

Let customers speak for us

from 1699 reviews
Great service

This review is for the company Overall. I accidentally placed one order and then realized I needed something else. On both orders I paid for priority shipping because I needed it right away. It was completely my fault and I didn’t ask for a thing. Next thing you know within a day. I got an email from the company saying that they were putting the orders together and refunding me back one of the priority Shipping payments I sent. I just thought that this was so kind and goes to show who they are as a company. I will do business with them again, and we recommend them wherever I can.

Christine P.
Topchic 8K Light Copper Blonde
So Easy!

Love the product but near impossible to find in the States so I was thrilled to find it available in Canada. Easy transaction and quick shipping. Even with paying for shipping from Canada, I spent less than what it would've cost me ordering from a US based company. Excellent experience.

Jennifer H.
Add Volume Styling Foam Mousse 287g / 10.1oz
Great company

I ordered a few times from CW. They are so great. Order confirnations, fast shipping, tracking. Nice packaging. Great customer service, they get back to you right away. Will continue to use. I ordered gold well products Very happy. !

Eva P.
Shades EQ Processing Solution for Precise Application (Gloss to Gel)
Service/Delivery of products.

Bottomless thank you to the entire team at Cosmetic World for providing great customer service.
Each time I've called the staff have been most helpful.eg. making an enquiry about a stock item that I was not able to find on their website.
Everyone has been most kind and helpful.
I would also like to give a shout out to the "packers" The products delivered were all in the meticulously packaged box.
Amazing!
Thanks again and keep up the good work.

Filomena P.
Topchic 7N Mid Blonde
The best product ever

I love all the products in Cosmetic World, I’m a hairstylist and I bought all my products here! The best quality and prices

Stephanie W.
Extra Strength Ultra Moisturizing Anti-Frizz Treatment
Mo in Dallas

This is the second time I ordered through Cometic World. Everything is done smoothly and the prices are absolutely fair. I checked Amazon and their price was better than anyone else. I do recommend this company strongly.

Mo R.
Goodbye Yellow Neutralizing Wash
Excellent service and products.

I was delighted with how prompt the order was delivered and with the excellent customer service. Products are good of course and I will recommend it.

Adriana N.
Koleston Perfect ME+ 5/3 Light Brown Gold
Ordering again for sure

This is my first order from cosmetic world and I can confidently say it will not be my last. The first time I used the product I used a 30v developer and it was too strong. Luckily I had 20v and it was a better experience. It does what it’s supposed to and more. You can get to a platinum level with this bleach. I used the developer that goes with this bleach as opposed to developer from my local beauty supply store in the states. Oh and my order arrived fast!

Angel H.
Igora Vario Blond Plus Blue Dust Free Lightening Powder
Great prices, speedy delivery!

All my hair color needs in one stop! And a great price with fast delivery, sign me up! Thank you!

Steven B.
Majirel 8.43/8CG Copper Golden Blonde
Excellent Store!

I highly recommend Cosmetic World! Great products and even better prices. The web store is easy to navigate and I made my purchase very easily and the product was shipped to me in less the estimated time. I highly recommend Cosmetic World.

Julie D.
High Hold & Low Shine Fiber 85g / 3oz
My purchase

Recently i've purchased my Goldwell Flat Marvel, which is the only product that works well with my hair, and i've used for years and years.
I was very happy to have found it at Cosmetic World, and my purchase/transaction went super smooth.
I received my product less than 1 week after purchase, and delivered to my door.
Thank you so much for such great experience 🩷⭐️⭐️⭐️⭐️⭐️🩷

Teresa C.
Straight S Flat Marvel
Great purchase!

I want to express my satisfaction with Cosmetic World for my recent purchase of Inoa L'Oréal hair dyes. The products arrived in perfect condition and on time. I am very happy with the purchase and appreciate the customer protection they offer for online shopping, which made me feel secure throughout the process. Knowing that I'm buying from a safe and reliable store adds an extra level of peace of mind. I'll will definitely shop at Cosmetic World again. I'm grateful to have found a store that offers quality products and excellent customer service.

Maribel S.
iNOA 6/6N Dark Blonde
Super impressed!!!

This was delivered to me the NEXT DAY! I was so impressed. I am a local shopper but I was beyond thrilled to have it arrive so quickly! Cosmetic World has The best selection of professional products at nearly professional cost! I used to buy from a place based out of QC but I’m now converted! Thank you Cosmetic World 🩷

Brittany C.
Goldwell Topchic 6%/20 Vol Cream developer Lotion with Bondpro+ 1L
Thank You!

Love the ease of finding new beauty and hair products. Fast shipping and great quality!

Alicia S.
Blondor Multi Blonde Dust-Free Powder Lightener

What Makes L’Oreal Professionnel DIA Light Stand Out?

  • Glossy Transformation: Tone, gloss, and refresh previously colored or sensitized hair, giving your tresses a vibrant and rejuvenated appearance.
  • Vinyl Shine: Embrace the brilliance of vinyl shine as the gentle acid technology works its magic, leaving the hair irresistibly lustrous.
  • Intense Hair Care: Experience the nurturing touch of DIA Light, providing hair with the love and care it deserves.
  • Versatile Options: Tailored for various hair shades, DIA Light is perfect for corrective color/pre-coloration, colormatch/refresh permanent haircolor, highlighting and Balayage refresh/tone, and lowlights.

Discover the Richness of L'Oréal DIA Light Color Chart

Discover the L'Oreal Dia Light Color Chart - your gateway to a world of mesmerizing hair transformations! This vibrant and captivating chart showcases a spectrum of stunning shades, each powered by L'Oreal's innovative Dia Light formula. From glossy blondes to rich brunettes and striking reds, find your perfect match and embrace the brilliance of vinyl shine. Elevate your hair color game and explore endless possibilities with L'Oreal Dia Light - where vibrant hues meet intense care for your locks.

Milkshake Shades: A Must-Have Delight! Featuring cool shades in Level 9 and 10, our Milkshake Shades are your secret weapon to tone and gloss blondes in a quick 2-10 minutes, delivering stunning results every time.

L’Oreal Professionnel Diactivateur Developer Pro Tips

Achieve the best results by pairing DIA Light with the recommended DIActivateur Developers:

How to Use L’Oreal Professionnel DIA Light

Mixing ratio: Combine 50 ml (1 tube) of L’Oreal Dialight color with 75 ml of Diactivateur (1.8% / 2.7% / 4.5%) to create a homogeneous mixture. Apply the mixture to dry, unwashed hair and allow it to process for 20 minutes (service time may vary based on professional hairdresser's recommendation). Afterward, massage and rinse thoroughly with water, followed by shampoo for colored hair.

Important Note: DIA Light is intended for professional use only, exclusively for licensed professionals. Safety is our priority, so we advise conducting a sensitivity and allergic patch test 48 hours prior to each application. Avoid using these products on eyelashes or eyebrows, and always handle chemical products with care.

Elevate your haircolor game with L'Oreal Professionnel DIA Light and unlock the beauty of glossy, refreshed hair, courtesy of our breakthrough acidic demi-permanent gel-crème formula. Experience the magic in every strand!

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