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L'Oréal Professionnel Paris Keratin Alpha Sleek Range

Say goodbye to frizz and hello to beautifully smooth, shiny hair with the L'Oréal Professionnel Paris Keratin Alpha Sleek Range, now at HairByU. Powered by Keratin Alpha-shaper Technology and Amino Acid Chains, this professional smoothing collection works deep within the hair fibre to deliver up to 2 weeks of smooth, frizz-controlled hair¹ while maintaining natural movement.

Designed for all hair types, the Keratin Alpha Sleek range helps tame frizz, control excess volume and boost shine without weighing hair down.

Up to 2 weeks of smooth, frizz-controlled hair¹

Up to 2x less frizz²

Up to 5x smoother hair²

Up to 77% more shine²

Controls frizz and unwanted volume

Suitable for all hair types

Professional salon-quality results

Complete your routine with the Sulfate-Free Shampoo, Smooth Transformer, Hair Mask and Mirror Sleek Serum for long-lasting smoothness and shine.

¹Instrumental test using the complete Keratin Alpha Sleek routine.
²Instrumental test compared to a non-conditioning shampoo.