Hair Oils & Shine Serums
Hair Oils & Shine Serums – Lightweight Nourishment for Smooth, Glossy, Healthy Hair
Give your hair that silky, light-reflecting finish with our curated collection of Hair Oils & Shine Serums. Whether you love a classic serum like Biosilk Silk Therapy, a luxurious argan-based formula like Moroccanoil Treatment, or lightweight dry oils and silicone-free options, this is your go-to destination for smoother, shinier, healthier-looking hair.
From fine hair that needs a touch of polish to thick, frizzy hair that craves serious smoothing, you’ll find formulas tailored to every texture, concern, and styling routine.
Why You’ll Love Our Hair Oils & Shine Serums
Our collection is designed to help you:
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Boost Shine Instantly – Add mirror-like gloss from mid-lengths to ends.
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Control Frizz & Flyaways – Smooth the cuticle for a sleek, polished finish.
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Nourish Dry Ends – Replenish moisture and softness where hair needs it most.
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Protect From Styling Stress – Many formulas help protect against heat, humidity, and breakage.
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Enhance Color & Dimension – Shine serums and oils make highlights and tones appear richer and more vibrant.
Most products can be used on damp or dry hair, making them easy to layer into your existing wash-and-style routine.
Find the Right Oil or Serum for Your Hair Type
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For Fine or Thin Hair
Look for lightweight serums and dry oils that add shine without weight. A few drops are usually enough for a soft, glossy finish that won’t flatten your style. -
For Thick, Coarse, or Curly Hair
Richer argan, coconut, or multi-oil blends help deeply nourish, reduce volume where needed, and tame frizz for smooth, defined, touchable hair. -
For Damaged or Color-Treated Hair
Choose repair-focused oils and serums with added proteins, vitamins, or bond-supporting technology to help reduce the look of split ends and improve softness over time. -
For Everyday Finishing & Styling
Go for multi-use treatments similar to Moroccanoil-style oils—perfect for blow-drying, air-drying, or finishing dry hair with extra shine and smoothness.
How to Use Hair Oils & Shine Serums
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Apply 1–3 pumps or drops (depending on hair length and thickness) to damp hair, focusing on mid-lengths and ends.
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For added shine, smooth a small amount onto dry hair after styling.
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Avoid the root area if you’re prone to oiliness—your ends need it more.
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Can be layered with leave-in conditioners, curl creams, or heat protectants as part of your regular routine.
Perfect For
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Dry, dull, or frizzy hair
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Color-treated and chemically processed hair
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Curly, wavy, or textured hair needing definition and moisture
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Fine hair that needs light, non-greasy shine
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Anyone who wants salon-finish gloss at home
Ready to upgrade your shine game?
Explore our Hair Oils & Shine Serums collection and find your new favourite finishing touch—from silky serums to nourishing treatment oils—all available at Cosmetic World and ready to ship across Canada and the US.
Let customers speak for us
from 3996 reviewsI've been ordering from Cosmetic World for awhile now, I'm always super impressed with how quickly I receive my order. Prices are great, they frequently have great sales - I have no complaints!
My go-to colour for a medium, cool, very ashy brown. Really does a good job of covering up any brassy tones my previously lightened hair has.
Love this line - I've used both the 7-42 and the 7-1, and I've also combined them. Both good ashy choices, with 7-1 being slightly ashier but it's not a big difference.
Verdict is still out for me; I would try this again but didn't feel the darker shade I mixed it with did a lot lot.
I've used this multiple times in conjunction with 6-12 from the same line, using the 7-1 more on my mids/ends. Always happy with the result, doesn't seem to ever go too dark even on my previously bleached mids/ends.
This has been my go-to developer for quite awhile - mixes well, bottle is huge, and the 10vol is a lot less damaging than higher strengths.
Really like these developers overall - I've used this one several times alongside the lightening powder by the same brand and always had good results.
This was nice, made my hair feel really soft - a little goes a long way, if I used too much it would weigh my hair down. Used on bleached hair so it might be pretty heavy on non-damaged hair.
I'm a big fan of Igora in general, and this colour was as expected. However, I think I'm more of a fan of the liquid semi-permanent range as I feel it's easier to use and to combine, but that's just a personal preference.
I've repurchased Olaplex No.3 several times - I often will take breaks, trying comparable, cheaper alternatives but ultimately I come back to this one. Works well for my damaged hair and IMO is worth the cost as I only use a very small amount at a time.
I've repurchased this powder a few times, I feel like its a super east-to-use + gentle lightening powder. I can just eyeball amounts and it's always turned out as expected!
This is a solid, lighter ashy blonde - I keep going back to this line for predictability, would recommend to anyone.
This is a good ashy light brown/dark blonde, I usually combine with a level 6 (putting this on mids/ends).
I like to add a splash of this to help cancel out orangey/brassy tones when colouring my hair to an ashier brown - one bottled lasts a long time.
I keep coming back to this colour, it's a perfect cool, ashy brown.
What customers think about the store
The store offers a wide selection of professional hair care and beauty products at competitive prices. Customers praise fast shipping, careful packaging, and excellent customer service. Popular for hard-to-find items, with reliable delivery across Canada and t... The store offers a wide selection of professional hair care and beauty products at competitive prices. Customers praise fast shipping, careful packaging, and excellent customer service. Popular for hard-to-find items, with reliable delivery across Canada and the US. Many loyal customers appreciate the quality products and rewards program.
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