The L'Oreal Professionnel Serie Expert Keratin Alpha Sleek Hair Mask is a professional-grade intensive conditioning treatment formulated to deeply nourish, hydrate and smooth frizz-prone hair. The rich formula works to reshape the hair's keratin structure, visibly reducing volume and improving softness and manageability from the first application. It forms an essential part of the Keratin Alpha Sleek routine — pair it with the Keratin Alpha Sleek Shampoo and finish with the Keratin Alpha Sleek Hair Serum for comprehensive frizz control. When used consistently, it helps reprogram the hair fibre for up to two weeks of lasting smoothness, making it an indispensable weekly treatment for sleeker, more controlled results.
Key Features
- Deeply conditions and hydrates the hair fibre from lengths to tips
- Helps reprogram hair for up to 2 weeks of frizz control with regular use
- Delivers up to 5x smoother hair and 2x less frizz
- Helps reduce unwanted volume by up to 3x
- Supports faster daily styling when used as part of the full routine
- Enhances shine with glossy results lasting up to 5 days
- Helps protect hair from breakage and improves softness from first use
Available Sizes
Directions
After cleansing with the Keratin Alpha Sleek Shampoo, apply evenly through lengths and tips. Leave on for five minutes, then rinse thoroughly. For optimal results, use alongside the Keratin Alpha Sleek Smooth Transformer once per week. On other wash days, use this mask to sustain moisture and smoothness, then apply the Keratin Alpha Sleek Hair Serum to seal and protect the hair fibre.
