L'Oréal ProfessionnelKeratin Alpha Sleek Hair Mask Anti Frizz & Smoothing Hair Treatment
Product Description
L'Oréal Professionnel Keratin Alpha Sleek Hair Mask Anti Frizz & Smoothing, nourishing conditioner hair treatment 250ml
Reprograms hair for up to 2 weeks of frizz control1
•\tUp to 5x smoother hair and 2x less frizz2
•\tControls unwanted volume for daily styling in half the time3
A professional hair mask treatment with a rich, sensorial texture that deeply nourishes, hydrates & conditions hair while reshaping and smoothing hair keratin.
•\tProvides up to 3x less unwanted volume ⁴
•\tHelps protect hair from hair breakage and improves softness from the first use5
•\tDelivers instant shine that lasts up to 5 days5
For instantly smoother hair, use this hair mask. For long-lasting reprogramming use Smooth Transformer once a week, and use this mask on other wash days of the week. Apply evenly from lengths to tips. Leave on for 5 minutes and rinse.
1Consumer test on 68 participants, 1 application/week for 4 weeks. Based on 15-day break observation. 2Instrumental test after 4 uses of Smooth Transformer. 3Instrumental tests with 4 uses of the Shampoo + Smooth Transformer + Serum routine. ⁴Instrumental test. 5Instrumental test after 1 application of shampoo, mask & serum.
Reprograms hair for up to 2 weeks of frizz control1
•\tUp to 5x smoother hair and 2x less frizz2
•\tControls unwanted volume for daily styling in half the time3
A professional hair mask treatment with a rich, sensorial texture that deeply nourishes, hydrates & conditions hair while reshaping and smoothing hair keratin.
•\tProvides up to 3x less unwanted volume ⁴
•\tHelps protect hair from hair breakage and improves softness from the first use5
•\tDelivers instant shine that lasts up to 5 days5
For instantly smoother hair, use this hair mask. For long-lasting reprogramming use Smooth Transformer once a week, and use this mask on other wash days of the week. Apply evenly from lengths to tips. Leave on for 5 minutes and rinse.
1Consumer test on 68 participants, 1 application/week for 4 weeks. Based on 15-day break observation. 2Instrumental test after 4 uses of Smooth Transformer. 3Instrumental tests with 4 uses of the Shampoo + Smooth Transformer + Serum routine. ⁴Instrumental test. 5Instrumental test after 1 application of shampoo, mask & serum.
Directions
For instantly smoother hair, use this mask. Use after Keratin Alpha Sleek Professional Shampoo, apply evenly from lengths to tips. Leave in for 5 minutes and rinse.
Ingredients
1261084 A - INGREDIENTS: AQUA / WATER / EAU • CETEARYL ALCOHOL • BEHENTRIMONIUM CHLORIDE • CITRIC ACID • CETYL ESTERS • GLYCERIN • GLYCINE • ISOPROPYL ALCOHOL • AMINOPROPYL DIMETHICONE • POTASSIUM HYDROXIDE • ISODODECANE • PHENOXYETHANOL • BIS(C13-15 ALKOXY) PG-AMODIMETHICONE • BUTYROSPERMUM PARKII BUTTER / SHEA BUTTER • STEARETH-100 • PROPYLENE GLYCOL • HYDROXYPROPYL GUAR • PEG-150/DECYL ALCOHOL/SMDI COPOLYMER • TETRAMETHYL ACETYLOCTAHYDRONAPHTHALENES • POLYQUATERNIUM-37 • LINALYL ACETATE • PROPYLENE GLYCOL DICAPRYLATE/DICAPRATE • CHLORHEXIDINE DIGLUCONATE • CARVONE • CITRUS LIMON PEEL OIL • LIMONENE • COUMARIN • LINALOOL • CITRUS AURANTIUM BERGAMIA PEEL OIL • BUTYLENE GLYCOL • PPG-1 TRIDECETH-6 • PINENE • ACRYLATES/STEARYL METHACRYLATE COPOLYMER • SORBITAN OLEATE • CARBOMER • SODIUM LACTATE • TAURINE • POLYSORBATE 20 • EDTA • PALMITOYL TRIPEPTIDE-1 • PALMITOYL TETRAPEPTIDE-7 • PARFUM / FRAGRANCE (F.I.L. N70061785/1).
This list of ingredients may be subject to change, please consult the packaging of the product purchased.
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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.
Date published: 2026-03-13
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