L'Oréal Professionnel's Keratin Alpha Sleek Smoothing Mask is a rich and sensory treatment formulated with Keratin Sleeker and amino acid chains, for frizzy hair.

It deeply nourishes while reshaping and smoothing the hair's keratin: the fiber is softened, hydrated, and immediately shinier. Used alternately with the Smooth Transformer treatment, it helps maintain two weeks of smooth hair, with frizz and volume control.

• Deeply nourishes and smoothes keratin
• Softens, hydrates, and instantly shines
• Helps maintain 2 weeks of smoothness and frizz control*
• No artificial colorants or alcohol
• For all hair types, natural, colored, or curly

Available sizes: 250 ml and 500 ml

Directions for use: After shampooing, apply evenly from mid-lengths to ends. Leave on for 5 minutes, then rinse thoroughly. Dry and style. Use on wash days without Smooth Transformer.

*Instrumental tests after 4 applications of the routine, 67 consumers.