L'Oréal Professionnel Keratin Alpha Sleek Shampoo is carefully developed to smooth, protect, and refine unruly hair, leaving it looking sleek and polished. Created for frizz-prone and chemically treated hair, this salon-quality formula gently cleanses while helping preserve the effects of keratin and smoothing treatments.

Powered by advanced smoothing technology, it helps tame flyaways, minimise excess volume, and improve manageability from the very first use. The lightweight yet nourishing formula works to strengthen the hair fibre, leaving strands soft, flexible, and easier to style. By sealing the cuticle and shielding against humidity, it promotes lasting smoothness and shine without weighing hair down.

Perfect for achieving professional results at home, Keratin Alpha Sleek Shampoo helps prolong the effects of straightening treatments while restoring a smooth, glossy finish. Hair feels noticeably softer, appears healthier, and stays more resistant to frizz throughout the day.

Key Features:

• When used with the full routine, it reprograms hair for up to 2 weeks of frizz control*
• It controls unwanted volume for daily styling in half the time**, adding softness and instant shine that lasts up to 5 days****
• Improves the hair’s health from the first use***
• The fragrance is Fig Leaf, Creamy Sandalwood, Orris and violet

*Consumer test on 68 participants, 1 application/week for 4 weeks. Based on a 15-day break observation.

** Instrumental tests with routine 4 times of Shampoo + Smooth Transformer + Leave-on.

***Instrumental test after 1 application of shampoo, mask & serum.

****Instrumental test after 1 application of shampoo, mask & serum.