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L'Oréal Professionnel Serie Expert Keratin Alpha Sleek Keratin mask for frizzy and unruly hair 250 ml
DescriptionHow to use itCompositions & ingredientsRelated productsCustomer reviewsGot a question?
Description
Enriched with Alpha Keratin Shaper and targeted amino acids
Tames frizz and unruly hair for long-lasting smoothness
Nourishes, smooths and delivers instant shine
Rich, velvety texture for a deep conditioning treatment
Perfect for dry, unmanageable or damaged hair
L'Oréal Professionnel Serie Expert Keratin Alpha Sleek Keratin Mask redefines hair discipline with a professional formula that combines intense nourishment and frizz control. This transformative treatment works deep within the hair fibre to deliver smooth, shiny, and effortlessly manageable hair every day.
Advanced Keratin Technology
Enriched with Keratin Alpha Shaper and amino acid chains, this disciplining mask reshapes the hair fibre while delivering deep nourishment. Its targeted action instantly softens, reduces frizz, and provides visible shine from the first use. When used as part of the full routine (shampoo + treatment + serum), it delivers up to 2 weeks of anti-frizz efficacy and 3 times faster styling*, for salon-quality results at home.
Rich Texture, Visible Results
Its luxurious, creamy formula coats each strand, providing deep hydration without weighing hair down. Hair becomes softer and more disciplined, with optimal volume control—even in humid conditions. Perfect for unruly or damaged hair, this mask fits seamlessly into your care routine for long-lasting results and an ultra-sleek finish.
Combining salon performance with easy at-home use, this disciplining mask transforms hair in both texture and appearance.
*Instrumental test results after 4 applications of Keratin Alpha Sleek Shampoo + Transformative Treatment + Serum.
REF:
3474637335694
How to use it
How to use the L'Oréal Serie Expert Keratin Mask?
After shampooing, apply the mask to mid-lengths and ends, avoiding the roots. Leave on for 5 minutes, then rinse thoroughly with warm water. For best results, use after the shampoo from the same range.
Tip: Alternate with the Smoothing Transformative Treatment (once a week) to extend the sleek, shiny effect.
Compositions & ingredients
The composition may be subject to variations, so we advise you to always check the list on the purchased product.
Ingredients may vary. For the most accurate information, please refer to the list on the product packaging.
Reviews
Rated 5 out of
5 by
SandraB from
You will see change just after first use! ✨❤️[This review was collected as part of a promotion.] I’v been using this hair mask for about 2,5 weeks.
Difference is honestly amazing!
My hairs feels deeply nourished and the texture is so much better ✨
Just like you can see on my photos 😁❤️
Oh and scent? Absolutely gorgeous
I didn’t expect such amazing results, just ordered another one!
If your hairs needs repair don’t go.. run for this product!
Date published: 2026-03-27
Rated 5 out of
5 by
AdriannaY from
Soft and glowy hair[This review was collected as part of a promotion.] Love this product, my hair feels super soft and smells beautiful. My hair is looking glowy and healthy, less frizzy. This mask is worth every penny.
Date published: 2026-03-26
Rated 5 out of
5 by
NathalieH from
Shiny, healthy hair[This review was collected as part of a promotion.] I received a sample size of this product limo tha ago and wondered how it would do using it long term. I am not surprised at the results.My hair is super soft, looks healthy and has a mirror shine. I have less hair fall and it smells absolutely amazing. My hair don’t break when I brush it, anymore and there is new hair growth. Easy to use, wash your hair, apply the product from ends and work your way up. Make sure to not put too much of the product on the roots. Leave for 5 minutes et voilà! I think it’s great value as you won’t be using it every single hair wash day. I use mine once a week and it does an amazing job.
Date published: 2026-03-23
Rated 5 out of
5 by
ErikaG from
Great[This review was collected as part of a promotion.] I love it, it has a lovely fragrance and rich texture , it leaves my hair silky soft and healty , also helps to tame frizz and reduce volume a little bit.
Date published: 2026-03-22
Rated 5 out of
5 by
PameliZ from
Smooth, Soft Hair Every Time[This review was collected as part of a promotion.] This hair mask makes such noticeable difference after just one use. My hair feels softer, looks shiner, and is way less frizzy without feeling heavy or greasy.
The texture is rich but easy to work through, and it rinses out clean without leaving any residue. It really gives that sleek, salon-like finish at home, which I love .
Perfect for anyone dealing with dry or unruly hair, definitely one I’ll keep buying.
Date published: 2026-03-19
Rated 5 out of
5 by
NallrrannaM from
Excellent[This review was collected as part of a promotion.] This mask smells amazing. I had excellent results with it. And it lasts a long time. Applying this product to the hair has an incredible feel. The results it gave my hair was highly effective. This mask is worth every pound. It’s a great value.
Date published: 2026-03-19
Rated 5 out of
5 by
AlehaU from
Does exactly what you want to see[This review was collected as part of a promotion.] Was given the opportunity to review the Keratin Alpha Sleek hair mask, by L’Oréal professional. This is so easy to apply and gives the results I was hoping to see. First I washed my hair then just towel dryed it. Whilst damp sectioned my hair in two parts and applied onto my hair. Left on for around 15 minutes as recommended then washed out. Finished off with blow drying then using my hair straighteners as the heat helps to activate the smoothing. Am very happy with the results as my hair is very fly away and tends to frizz out through out the day. This most definitely stopped this happening my hair strands stayed more flat. The texture is rich and creamy with a very soft sent, it’s does exactly what you need it to do. I’m definitely going to stick to this at least twice a week to keep my hair much more tame .
Date published: 2026-03-13
Rated 5 out of
5 by
MichelleM from
Great stuff[This review was collected as part of a promotion.] Smells nice and it’s a nice consistency, not too thick or too heavy it feels nice and light when on the hair. Works well and really helped my hair look and feel good after using it and will be buying this again.
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