Product Overview

L’Oréal Professionnel Serie Expert Keratin Alpha Sleek Professional Hair Mask is a smoothing treatment designed to control frizz, protect against humidity and improve manageability in unruly hair. Enriched with Keratin Amino-Acid Technology, the formula helps restore the hair fibre surface while delivering long-lasting smoothness and shine.

The professional conditioning mask helps protect hair from breakage and provides up to 72 hours of frizz control when used as part of the Alpha Sleek routine. Hair feels softer, smoother and easier to style after each application.

How To Use 

For instantly smoother hair, use this professional mask. For long-lasting smoothness, use the Keratin Alpha Sleek Smooth Transformer once a week, and use this mask on other wash days of the week. -After using the Keratin Alpha Sleek professional shampoo, apply evenly from mid lengths to ends. -Leave on for 5 minutes and rinse. -In case of contact with eyes, rinse immediately and thoroughly.

Laura loves this product because… it delivers salon-level smoothness while helping control humidity and improve long-term manageability.

Specifications

Brand
L'Oréal Professionnel
Size
250ml
Format
Cream
Suitable for
Unruly,Frizzy,Damaged
Key ingredients
Keratin

Authorised L'Oréal Professionnel stockist

Know exactly what you are buying

Professional guidance, honest answers and the details that matter.

Why our stylists rate it
From the Partners Hair team
L'Oréal Professionnel Keratin Alpha Sleek Hair Mask is an intensive smoothing and anti-frizz treatment mask. Part of the L'Oréal Professionnel Keratin Alpha Sleek range. Concentrated Keratin actives deeply smooth and tame frizzy, unruly hair in a weekly treatment.

Best for: frizzy, thick, or unruly hair wanting intensive weekly smoothing treatment; use in place of conditioner.

Key actives:
- Keratin (concentrated) — intensive smoothing and frizz control

Benefits:
- Intensive weekly smoothing treatment; sleek, manageable result

How to use: Apply to clean, damp hair. Leave 5-10 minutes, rinse.

Format: 250ml Keratin Alpha Sleek Hair Mask.

Authorised L'Oréal Professionnel stockist — 100% authentic, sourced from the official South African distributor. Free delivery on orders over R390 across South Africa.
Delivery without the guesswork

Spend R390 and delivery is on us. Orders under R390 are delivered for R67. We normally pack within 1 working day, with delivery in 2–5 working days depending on your location.

Changed your mind? You have 7 days after receiving your order to request a return. Email hello@partnershair.co.za to get started.

Why shop it at Partners Hair

Professional haircare is only as good as the source. We buy through official South African distribution, so every item is genuine, authorised stock.

Behind the store are 250+ working stylists across 24 Cape Town salons. Need help choosing? Visit Ask the Experts for real advice from the salon floor.

Why professionals trust Partners

Salon authority since 1984

Four decades of hands-on hair expertise behind every recommendation.

Advice from 250+ working stylists

The products online are the products our teams reach for in 24 salons every day.

Only authentic professional stock

Authorised products sourced through official South African distribution.