OLIGO_Blacklight 30 Volume (9%) Smart Developer 1L / 32oz_Cosmetic World
Oligo - Blacklight Blacklight 30 Volume (9%) Smart Developer 1L / 32oz $22.99
Oligo Blacklight 30 Volume (9%) Smart Developer – Gradual Bond Protection Technology strengthen hair structures and protect hair surface during chemical treatments. Deliver optimal lifting and facilitate application with perfect shade consistency of final mix. Replenish & prevent loss of natural lipids. Leaves hair with vibrant color while healthy and protected.   Directions 1.     Use with Blacklight Lighteners and Blacklight Powershades 2.     Follow instructions and mixing ratio on their package
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KADUS_Kadus 30 Vol/9% Developer 1L_Cosmetic World
Kadus Kadus 30 Vol/9% Developer 1L $13.99
Kadus 30 Vol / 9% Developer 1L Kadus cream peroxide developer is an extra rich creme emulsion with Vitaflection Microspheres Activator for a perfect colour result. Extra Rich Crème Emulsion available in 3% 10 Vol, 6% 20 Vol, 9% 30 Vol, and 12% 40 Vol
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KADUS_Kadus 40 Vol/12% Developer 1L_Cosmetic World
Kadus Kadus 40 Vol/12% Developer 1L $13.99
Kadus 40 Vol / 12% Developer 1L Kadus cream peroxide developer is an extra rich creme emulsion with Vitaflection Microspheres Activator for a perfect colour result. Extra Rich Crème Emulsion available in 3% 10 Vol, 6% 20 Vol, 9% 30 Vol, and 12% 40 Vol
OYA - OWN YOUR ART_OYA Lotion 30 vol 9%_Cosmetic World
OYA - Own Your Art OYA Lotion 30 vol 9% $15.99
OYA Lotion 30 vol 9% 32oz Specially designed for Oya permanent colors. Delivers the best result of Oya colors. Consistent brilliant colors with long-lasting resistance to fading. The cream texture allows easy mixture and application. Easy 1:1 mixing ratio. Choosing the right volume: 10 volume (3%): All gray coverage and deposit only 20 volume (6%): Up to 2 levels of lift 30 volume (9%): 2 to 3 levels of lift 40 volume (12%): 3 or more levels of lift 
DAVINES_Davines 20 Vol Universal Activator_Cosmetic World
Davines Davines 20 Vol Universal Activator $13.99
Davines 20 Vol Universal Activator 900ml Creamy emulsion of hydrogen peroxide at 6%/20 Volume. The formula is balanced to ensure high color penetration into the hair for long-lasting color.  Benefits & Features It perfectly adheres to the hair shaft without coloring it Long-lasting color Emollient and protective agents ensure soft and shiny hair
DAVINES_Davines 40 Vol Universal Activator 900ml_Cosmetic World
Davines Davines 40 Vol Universal Activator 900ml $13.99
Creamy emusion of hydrogen peroxide at 12%/40 Volume. The formula is balanced to ensure high colour penetration into the hair for long lasting colour.  Benefits It perfectly adheres to the hair shaft without colouring it Long lasting colour Emollient and protective agents ensure soft and shiny hair Ingredients (may differ on bottle) AQUA / WATER / EAU, HYDROGEN PEROXIDE, CETEARYL ALCOHOL, CETEARETH-30, HYDROGENATED POLYDECENE, SALICYLIC ACID, DISODIUM PHOSPHATE, PHOSPHORIC ACID, ETIDRONIC ACID.
WELLA - COLOR TOUCH_Color Touch Emulsion 1.9%/6 Vol Developer 1L_Cosmetic World
Wella - Color Touch Color Touch Emulsion 1.9%/6 Volume Developer $15.99
Wella Color Touch Emulsion 1.9%/6 Volume Developer 1L Wella Colour Touch Emulsion is outlined to be utilized with the Wella Colour Touch and relights ranges of semi-permanent colorants. It's a thick and rich, creamy water based formula which has an impressive mixing ability and gives heavenly performance as it sticks to the hair giving you mind boggling control with its non-trickle recipe which is impeccable for precise colouring techniques. It correspondingly layers hair giving you awesome even coverage whilst providing radiant looking colour. It provides you with safe colouring results and is Ammonia free. Wella Colour Touch Emulsion is available in 2 different strengths. 1.9% is great for use with most Wella Colour Touch Colours to enhance colour and condition. Perfect for use on recently permed, normal to fine hair. 4% is recommended for use on grey hair and works better to keep colour in longer when using the Vibrant Red Collection. Perfect for use on coarse hair. Wella Colour Touch Emulsion is to be used in a 1+2 parts ratio e.g.  30ml Colour Touch  + 60ml Crème lotion. 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.
WELLA - COLOR TOUCH_Color Touch Emulsion 4%/13 Vol 1L_Cosmetic World
Wella - Color Touch Color Touch Emulsion 4%/13 Volume $15.99
Wella Color Touch Emulsion 4%/13 Volume Wella Colour Touch Emulsion is outlined to be utilized with the Wella Colour Touch and relights ranges of semi-permanent colorants. It's a thick and rich, creamy water based formula which has an impressive mixing ability and gives heavenly performance as it sticks to the hair giving you mind boggling control with its non-trickle recipe which is impeccable for precise colouring techniques. It correspondingly layers hair giving you awesome even coverage whilst providing radiant looking colour. It provides you with safe colouring results and is Ammonia free. Wella Colour Touch Emulsion is available in 2 different strengths. 1.9% is great for use with most Wella Colour Touch Colours to enhance colour and condition. Perfect for use on recently permed, normal to fine hair. 4% is recommended for use on grey hair and works better to keep colour in longer when using the Vibrant Red Collection. Perfect for use on coarse hair. Wella Colour Touch Emulsion is to be used in a 1+2 parts ratio e.g.  30ml Colour Touch  + 60ml Crème lotion. 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.
WELLA - COLOR TOUCH_Intensive Emulsion 4%/13Vol 3.78L/1 Gallon_Cosmetic World
Wella - Color Touch Intensive Emulsion 4%/13Vol 3.78L/1 Gallon $95.99
Wella Colour Touch Intensive Emulsion 4%/13Vol 3.78L/1 Gallon Wella Colour Touch Emulsion is outlined to be utilized with the Wella Colour Touch and relights ranges of semi-permanent colorants. It's a thick and rich, creamy water based formula which has an impressive mixing ability and gives heavenly performance as it sticks to the hair giving you mind boggling control with its non-trickle recipe which is impeccable for precise colouring techniques. It correspondingly layers hair giving you awesome even coverage whilst providing radiant looking colour. It provides you with safe colouring results and is Ammonia free. Wella Colour Touch Emulsion is available in 2 different strengths. 1.9% is great for use with most Wella Colour Touch Colours to enhance colour and condition. Perfect for use on recently permed, normal to fine hair. 4% is recommended for use on grey hair and works better to keep colour in longer when using the Vibrant Red Collection. Perfect for use on coarse hair. Wella Colour Touch Emulsion is to be used in a 1+2 parts ratio e.g.  30ml Colour Touch  + 60ml Crème lotion. 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. This item may be subject to additional shipping charges due to weight/size.
SCHWARZKOPF - IGORA VIBRANCE_Igora Vibrance Activator 1.9%/6 Vol 1L/33.81 oz_Cosmetic World
Schwarzkopf - Igora Vibrance Igora Vibrance Activator 1.9%/6 Vol $19.99
Schwarzkopf Igora Vibrance Activator Lotion 1.9% / 6 Vol – Professional Hair Color Developer Unlock Luminous Color with Igora Vibrance Activator Lotion Achieve vibrant, salon-quality results every time with Schwarzkopf Igora Vibrance Activator Lotion 1.9% / 6 Vol. This professional-grade developer is specially formulated to work seamlessly with Igora Vibrance demi-permanent hair colors, offering controlled, even color results and unparalleled shine. Perfect for stylists and beauty enthusiasts alike, the Activator Lotion ensures smooth application and long-lasting, radiant hair color. Benefits & Features Creamy Lotion Texture – Provides effortless mixing and precise application without dripping. Gentle Formulation – Low 1.9% (6 Vol) developer ideal for toning, refreshing, or glossing services. Brilliant Shine – Enhances the natural reflect and vibrancy of every shade. Consistent Results – Ensures uniform color from root to tip. Compatible System – Designed to pair perfectly with Igora Vibrance Color Creams. What Makes It Stand Out? The Igora Vibrance Activator Lotion offers a creamy consistency that gives colorists superior control and precision. When used with Igora Vibrance color creams, it produces radiant, healthy-looking tones with enhanced manageability and softness.This formula’s gentle strength means it’s ideal for delicate or color-treated hair, giving you vibrant results without over-processing. Who Is the Product For? Professional stylists looking for a reliable, gentle developer for demi-permanent services. Color enthusiasts seeking salon-grade results at home. Perfect for color refreshing, glossing, toning, or post-lightening treatments. Specifications Product Name: Schwarzkopf Igora Vibrance Activator Lotion 1.9% / 6 Vol Size: 1 Liter (33.8 fl. oz.) Type: Creamy activator lotion Mixing Ratio: 1:1 with Igora Vibrance color creams Developer Strength: 1.9% / 6 Vol Brand: Schwarzkopf Professional Enhance Your Color Services with Igora Vibrance! Bring out the brilliance of your shades and achieve effortless, even coverage with Schwarzkopf Igora Vibrance Activator Lotion 1.9% / 6 Vol.Order today from Cosmetic World and enjoy professional-quality results at home or in the salon.
Schwarzkopf - Igora Vibrance_Igora Vibrance Activator Gel 1.9%/6 Vol_Cosmetic World
Schwarzkopf - Igora Vibrance Igora Vibrance Activator Gel 1.9%/6 Vol $16.99
Schwarzkopf Igora Vibrance Activator Gel 1.9% / 6 Vol. – Professional Hair Color Perfection Revitalize Your Color Routine with Igora Vibrance Activator Gel Transform your color services with Schwarzkopf Igora Vibrance Activator Gel 1.9% / 6 Vol., a professional-grade activator designed to work seamlessly with Igora Vibrance demi-permanent hair color. This unique gel formula ensures smooth, even application and controlled development, making it perfect for precise coloring techniques and flawless, salon-quality results. Formulated to activate the moisture-rich, ammonia-free Igora Vibrance shades, this activator maintains hair’s integrity while delivering brilliant shine and long-lasting color vibrancy. Benefits & Features Smooth Gel Consistency: Ideal for brush-and-bowl applications and root touch-ups. Gentle, Low-Volume Formula (1.9% / 6 Vol.): Ensures controlled color deposit with minimal lift—perfect for toning and refreshing color. Enhanced Color Retention: Works harmoniously with Igora Vibrance to deliver consistent, radiant results. Professional Precision: Provides superior control, reducing color bleeding and ensuring even saturation. Shine-Boosting Effect: Helps seal the hair cuticle for a silky, glossy finish after each application. What Makes It Stand Out? Unlike traditional developers, the Igora Vibrance Activator Gel offers a versatile gel texture that delivers professional precision and smooth blending. It’s designed specifically for stylists who demand total control and consistency—ensuring every strand receives the perfect amount of color. The result? Vibrant, dimensional tones that look rich and healthy, not flat or overprocessed. Who Is the Product For? Professional stylists seeking precision for toning, color refreshing, and root applications. Salon clients who prefer a gentle, ammonia-free color experience that leaves hair soft and shiny. Home color enthusiasts (with some experience) looking to achieve professional-level demi-permanent results at home. Specifications Brand: Schwarzkopf Professional Product Line: Igora Vibrance Type: Activator Gel / Developer Volume: 1L (33.8 fl. oz.) Strength: 1.9% / 6 Vol. Formulation: Gel consistency Recommended Use: For use exclusively with Igora Vibrance demi-permanent color shades Bring Your Color to Life Upgrade your color services with Schwarzkopf Igora Vibrance Activator Gel 1.9% / 6 Vol. for radiant, long-lasting tone and unbeatable shine. Whether you’re enhancing depth, refreshing faded color, or toning blonde highlights, this activator is the key to flawless results. Order now from Cosmetic World and experience salon-quality color at home or in your studio!
SCHWARZKOPF - IGORA VIBRANCE_Igora Vibrance 4%/13 Vol Activator Lotion 1L_Cosmetic World
Schwarzkopf - Igora Vibrance Igora Vibrance 4%/13 Vol Activator Lotion 1L $19.99
Schwarzkopf's state-of-the-art Activator System allows hairdressers to choose between a gel or cream consistency. The IGORA VIBRANCE Activator Lotion contains a special thickening agent, which transforms the liquid colour into a cream consistency – ideal for easy, faster application!   FEATURES- Contains a special thickening agent- Transforms liquid colour into a cream consistency- Enables precise, easy & fast application- Pastel toning and neutralization- Tone on tone services- Darker colouring- Up to 30% white hair blending 1000ml | 33.8 fl oz 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 PROFESSIONNEL_DIActivateur 6 Vol/1.8% Activator_Cosmetic World
L'Oreal Professionnel DIActivateur 6 Vol/1.8% Activator $24.99
L'Oreal Professionnel DIActivateur 6 Vol/1.8% Activator DIActivateur Developer 6-Volume is fully stabilized and buffered to ensure consistent and uniform color results. It's creamy, rich formulas offer gentle controlled lightening  and coloring action. This developer pairs with DIA Light and DIA Richesse. DIActivateur Developer 6-Volume is great for color treated hair and sensitized hair; for more luminous color; for corrective color/pre-coloration; for permed, smoothed, or straightened hair; and for refreshing and toning highlights. 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 PROFESSIONNEL_DIActivateur 9 Vol/2.7% 1L_Cosmetic World
L'Oreal Professionnel DIActivateur 9 Vol/2.7% 1L $24.99
L'Oreal Professionnel DIActivateur 9 Volume Elevate your hair coloring game with the L'Oreal Professionnel DIActivateur 9 Volume. Specially crafted for professionals and enthusiasts alike, this developer ensures unparalleled results every time you reach for the dye. Whether you're aiming for subtle highlights or a bold transformation, trust in the reliability of DIActivateur 9 Volume to deliver. Benefits & Features Consistent Color Results: With its fully stabilized and buffered formula, expect nothing short of uniform color application throughout. Gentle Lightening Action: The creamy, rich formula gently lightens hair while ensuring controlled color saturation for a natural-looking finish. Versatile Compatibility: Designed to pair seamlessly with L'Oreal's DIA Light and DIA Richesse ranges, providing endless possibilities for creativity. Ideal for Various Hair Types: From color-treated to sensitized hair, this developer caters to diverse hair needs, ensuring a luminous color every time. Multipurpose Application: Whether you need corrective color, pre-coloration treatment, or refreshing highlights, DIActivateur 9 Volume has got you covered. Suitable for Chemically Treated Hair: Perfect for permed, smoothed, or straightened hair, maintaining color vibrancy without compromising hair integrity. What Sets It Apart? DIActivateur 9 Volume stands out due to its meticulous formulation, which prioritizes both performance and hair health. Unlike generic developers, it's engineered to provide consistent, salon-quality results without causing unnecessary damage to your locks. Plus, its compatibility with L'Oreal's premium color ranges ensures a seamless and professional coloring experience every time. How It Solves Your Hair Woes For those seeking salon-worthy hair color from the comfort of their own home or salon, DIActivateur 9 Volume is the ultimate solution. Say goodbye to lackluster color and hello to vibrant, long-lasting hues that exude confidence and style. Whether you're a seasoned pro or a DIY enthusiast, this developer empowers you to unleash your creativity without compromise. Specifications Volume: 9 Compatibility: DIA Light, DIA Richesse Formulation: Creamy, Rich Hair Types: Color-treated, Sensitized, Chemically Treated Applications: Color Correction, Pre-coloration, Highlight Refreshing Ready to take your hair color game to the next level? Purchase your L'Oreal Professionnel DIActivateur 9 Volume today and unlock endless possibilities for stunning hair transformations. 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 tests 48 hours prior to each application. These products must not be used on eyelashes or eyebrows.
L'OREAL PROFESSIONNEL_DIActivateur 15 Vol/4.5% 1L_Cosmetic World
L'Oreal Professionnel DIActivateur 15 Vol/4.5% 1L $24.99
L'Oreal Professionnel DIActivateur 15 Vol/4.5% DIActivateur Developer 15-Volume is fully stabilized and buffered to ensure consistent and uniform color results. It's creamy, rich formulas offer gentle controlled lightening  and coloring action. This developer pairs with DIA Light and DIA Richesse. DIActivateur Developer 15-Volume is great for color treated hair and sensitized hair; for more luminous color; for corrective color/pre-coloration; for permed, smoothed, or straightened hair; and for refreshing and toning highlights. 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 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

Developer comes in different strengths, the common ones being 10 volume, 20 volume, 30 volume and 40 volume. It’s possible to buy peroxide in stronger concentrations but they’re much too strong to use on hair and should be avoided. Developer strength is sometimes represented as a percentage. 6% and 20 vol. are the same strength.

Equivalent Developer Strengths;

  • 10 Volume - 3%
  • 20 Volume - 6%
  • 30 Volume - 9%
  • 40 Volume - 12%

What strength/volume developer should I use?

10 volume is ideal for use when you don’t want the natural hair color to be lightened by the dyeing process. It’s used in toners and color glazes. These types of dyes are known as “deposit-only”.

20 volume peroxide is commonly used with semi-permanent and permanent hair colors. It can have a lightening effect on natural, undyed hair of 1 or 2 shades when used with permanent color.
When mixed with bleach powder, 20 volume developer will lighten virgin hair by about 5 levels.

30 volume developer is used for lifting out color. Its main use is in bleaching and it can lighten around 7 levels depending on the bleach powder used.

40 volume is occasionally used to lighten very dark, stubborn hair as part of the bleaching process. It lightens quickly and its effects are harsher than lower concentrations. 40 volume is not recommended for on-the-scalp use. Using 40 volume developer can cause hair damage and chemical burns if not used correctly. Instead, using multiple applications using lower volume peroxide will allow more controlled lightening.

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