What it is: A professional hair mask formulated with keratin that intensely nourishes to control frizz and volume, leaving hair instantly softer, smoother, and shinier.
Hair Texture: Straight, Wavy, Curly, and Coily
Hair Type: Fine, Medium, and Thick
Hair Concerns: - Frizz - Shine - Volumizing
Key Benefits: - Intensely nourishes to smooth and reshape the hair fiber - Provides lasting frizz and volume control - Delivers instant softness, hydration, and shine
Highlighted Ingredients: - Keratin-Alpha Shaper and Amino-Acid Chains: A powerful complex that smooths the hair fiber to control frizz.
Ingredient Callouts: It is vegan.
What Else You Need to Know: This professional mask has a rich texture that intensely nourishes while reshaping and smoothing hair keratin. It is free from alcohol and artificial colorants, and suitable for all hair types.
Fragrance Description: A fresh and modern floral fragrance with powdery notes of cardamom and ginger, balanced by a warm, musky base of sandalwood and vetiver.
Clinical Results: In an instrumental test using the mask alone: - Frizz was reduced by 84% - Volume increased by 76% - Hair was 74% more shiny and 2x smoother, softer, and more hydrated
 this conditioning mass has been a game changer in my hair care routine. Especially in the summer months my hair is super frizzy and using this keratin leak and his hair has really smooth out the frizz on top of my head and throughout my hair.
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maria2749
Incentivized
1mo ago
Recommended
A must have hair mask!
L’Oréal Keratin Alpha Sleek Anti-Frizz Hair Mask is a great treatment for making hair feel softer, smoother, and more manageable. It helps tame my frizz, adds shine, and leaves hair feeling nourished without making it feel too heavy. The texture is creamy and easy to apply, with a pleasant salon-like scent. It works best when used consistently, especially on dry, frizzy, or damaged hair. Overall, it’s an affordable option for achieving a smoother, sleeker look at home.
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cherriebomb21
Incentivized
Verified Purchase
1mo ago
Got this seein the good reviews, doesn’t work
I’ve tried this exactly how the directions say, on damp or wet hair and it does nothing. I have very thick frizzy curly hair and was hoping this would make my hair a little less frizzy but it really had no effect. It does smell good tho. NOT worth the price.
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ayooooota
2mos ago
Recommended
I hadn’t used L’Oréal products in years, so I was pleasantly surprised by how much I liked this range. The Keratin Alpha Sleek Anti-Frizz Hair Mask replaces conditioner and a little goes a long way. I leave it on for about 5 minutes before rinsing and my hair immediately feels softer and more manageable. I have naturally wavy/curly hair and while it didn’t make it pin-straight like some images suggest, it definitely loosened my waves and reduced frizz noticeably. My hair stayed smooth until my next wash, even with working out several times a week. Overall, really impressed with the results
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srilee
Incentivized
2mos ago
Recommended
The Keratin Alpha Sleek Anti-Frizz Hair Mask. I saw more hydration (so less frizz) and my hair felt stronger, softer. But this one didn’t smell like the shampoo to me. Not sure about the less volume; my hair is damage, dry, and colored towards the ends. This did help them a lot. This mask is good for different hair types and textures especially damaged. There is way more shine than I normally would have. My hair definitely feels stronger because of these products ! I probably did leave this one for more than 5 mins maybe 10mins. And rinse it off. I am liking and maybe loving this mask. I did receive this as a part of an educational promotion.
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Duckie008
Incentivized
2mos ago
Recommended
Love it!
I’ve been using the L’Oréal Professionnel Keratin Alpha Sleek Mask for a few weeks now and honestly I really like it. My hair tends to get dry and frizzy, especially after heat styling, and this made it feel way softer without feeling heavy or greasy. I noticed my hair looked smoother after the first use and it definitely helped with flyaways. The scent is really nice too… it’s like a clean and salon like scent without being overpowering. I usually leave it on for a few minutes in the shower and my hair feels silky after rinsing. It also made brushing my hair easier and gave it a healthier shine. A little goes a long way, so the tub lasts longer than expected. Overall, I’d definitely keep using this and would recommend it if you’re trying to tame frizz and make your hair feel healthier.
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AbbyMinne
Incentivized
3mos ago
Recommended
love it
I have never tried a mask that leaves my hair, super silky and soft. It looks like I got a keratin treatment. The frizz is gone and my hair looks very, very healthy. Sometimes I leave without straightening my hair and usually I have to straighten it to take the frizz out, but this has helped a lot. I really love it. I have only been using it for a couple of weeks one time a week and it is amazing. It smells so good. I got compliments of how good my hair smells and looks. I really recommend it.
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Hazeleyez408
Incentivized
3mos ago
Recommended
Love it
I have been super impressed with this product, it has seriously changed my hair! My hair was so frizzy and damaged and this definitely made my hair come back to life. I use this a couple times a week.
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Jilliancarissa
Incentivized
3mos ago
Recommended
Miracle for my hair
I love how smooth and shiny my hair is after this mask😘
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dannysview
Incentivized
3mos ago
Not the result I’ve expected
Well for some reason after using this mask I got even more frizz than usually, that’s why I give it three stars. I have thin, frizz-prone hair and I’ve tried so many different products and unfortunately this mask is not my favourite one.
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olgarom
Incentivized
What it is: A professional hair mask formulated with keratin that intensely nourishes to control frizz and volume, leaving hair instantly softer, smoother, and shinier.
Hair Texture: Straight, Wavy, Curly, and Coily
Hair Type: Fine, Medium, and Thick
Hair Concerns: - Frizz - Shine - Volumizing
Key Benefits: - Intensely nourishes to smooth and reshape the hair fiber - Provides lasting frizz and volume control - Delivers instant softness, hydration, and shine
Highlighted Ingredients: - Keratin-Alpha Shaper and Amino-Acid Chains: A powerful complex that smooths the hair fiber to control frizz.
Ingredient Callouts: It is vegan.
What Else You Need to Know: This professional mask has a rich texture that intensely nourishes while reshaping and smoothing hair keratin. It is free from alcohol and artificial colorants, and suitable for all hair types.
Fragrance Description: A fresh and modern floral fragrance with powdery notes of cardamom and ginger, balanced by a warm, musky base of sandalwood and vetiver.
Clinical Results: In an instrumental test using the mask alone: - Frizz was reduced by 84% - Volume increased by 76% - Hair was 74% more shiny and 2x smoother, softer, and more hydrated
-Keratin-Alpha Shaper and Amino-Acid Chains: A powerful complex that smooths the hair fiber to control frizz.
Suggested Usage: -After shampooing with Keratin Alpha Sleek Shampoo (sold separately), apply evenly from lengths to tips. -Leave on for five minutes. Rinse thoroughly. -For long-lasting results, use the Keratin Alpha Sleek Smooth Transformer (sold separately) once a week and use this mask on the other wash days of the week.
Summary
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4
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4.8★
188 Reviews*
97%
Recommended
*Some reviewers received something in exchange for a review (free product, payment, sweeps entry).
