L'Oréal Professionnel
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Keratin Alpha Sleek Anti-Frizz Hair Mask

Keratin Alpha Sleek Anti-Frizz Hair Mask is rated 4.6 out of 5 by 25.
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Keratin Alpha Sleek Anti-Frizz Hair Mask
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8.5 oz.
#E4565500
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What It Is

A rich, professional hair mask formulated with keratin that deeply nourishes to control frizz and volume, leaving hair instantly softer, smoother, and shinier.

What It Does

• Long-lasting smooth hair

• 6x smoother hair*

• 84% less frizz**

• 61% more hydrated**

• Suitable for all hair types, even color or keratin-treated

* System of shampoo, smooth transformer, and leave-on vs. before application

** vs. non-conditioning shampoo

***vs. unwashed hair

**** vs. non-conditioning shampoo when using flat iron

What Else You Need to Know

This professional hair mask, formulated with Keratin-Alpha Shaper and amino-acid chains, deeply nourishes while reshaping and smoothing the hair fiber for a sleek, polished finish.

1. After shampooing with Keratin Alpha Sleek Shampoo, apply evenly from lengths to tips.

2. Leave on for five minutes.

3. Rinse thoroughly.

For long-lasting results, use the Keratin Alpha Sleek Smooth Transformer once a week and use this mask on the other wash days of the week.

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

Purchases made in SalonCentric stores may be returned to any SalonCentric store. Purchases made through SalonCentric Customer Service, SalonCentric Business Partners, and SalonCentric.com orders Sold and Shipped by SalonCentric may be returned to a SalonCentric store; however, the return must not exceed $450 and must include the original receipt, packing slip, or invoice. For returns in-store of online orders, the refund will be credited back to the original payment method once the return has been processed. For SalonCentric.com Online Exclusive orders sold and shipped by third-party sellers, please see more details linked below for return steps.

The SalonCentric return policy does not currently apply to Kérastase & Shu Uemura purchases. Kérastase & Shu Uemura do not accept returns.

Click to see more details.

Rated 5 out of 5 by from Loving this mask! I. Love. This. Mask!!! It is amazing for clients with or without keratin treatment. My clients without keratin, but seeking a similar look, walk out after this looking like they’ve had a fresh keratin! It leaves the hair smooth, soft, and frizz free. My thicker hair clients leave feeling like I cut off half of their head because of how smoothing this is. Very satisfied!! I received this product at no charge in exchange for my honest review.
Date published: 2026-06-19
Rated 5 out of 5 by from A summer need Leaves hair feeling soft and shiny without extra weight. This is a for the humid summers.
Date published: 2026-06-18
Rated 5 out of 5 by from Soft like butter It smells amazing, leave a beautiful shine and softness.
Date published: 2026-06-17
Rated 5 out of 5 by from Worth trying I received this product from BzzAgent to review. This was prob my favorite. Little to no scent, thick formula..I left on for 5 min as directed. I used with as a system with alpha sleek shampoo and client felt her hair was noticeably less frizzy and smooth.
Date published: 2026-06-13
Rated 5 out of 5 by from I love this product not doubts Amazing product I definitely recommend
Date published: 2026-06-12
Rated 4 out of 5 by from Great product! This product works amazing! It helps tame frizz, and keep the hair sleek. It made the hair soft and bouncy.
Date published: 2026-06-12
Rated 5 out of 5 by from Soft, Smooth Hair After Every Use I really like this hair mask. After using it, my hair feels much softer, smoother, and easier to brush through. It helps reduce frizz and leaves my hair looking healthier without making it feel heavy. A little goes a long way, so the jar lasts quite a while.
Date published: 2026-06-11
Rated 4 out of 5 by from works well worked better than i expected. helped reduce volume and frizz. definitely a good system
Date published: 2026-06-09
  • y_2026, m_8, d_13, h_8
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.48
  • cp_1, bvpage1
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  • clientName_saloncentric
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  • CLOUD, getReviews, 12ms
  • reviews, product