Keratin Alpha Sleek Mask refills Damaged hair mask that smooths

Damaged hair mask that smooths and hydrates

52mm – Best for long hair and achieving maximum volume and smoothness

All-day strong hold and control

revitalising even the driest

Keratin Alpha Sleek Mask refills Damaged hair mask that smoothsL'Oral Professionnel Serie Expert Alpha Sleek Mask is an intensive smoothing treatment designed to deeply nourish, reduce frizz, and improve manageability for smoother, more disciplined hair. Powered by Alpha Silane technology, this rich formula helps soften the hair fibre, enhance shine, and protect against humidity while maintaining a lightweight feel. Ideal for frizz prone, coarse, or unruly hair, it leaves hair feeling silky, smooth, and easier to