A leave-in treatment mask that works on the molecular level to reverse hair damage in just 4 minutes. The K18PEPTIDE™ is clinically proven to repair damage from bleach + color, chemical services and heat* – with immediate and lasting results to restore strength, softness, smoothness and bounce to hair.

Shampoo, do not condition. Towel-dry thoroughly.

Apply 3-9 pumps of K18 leave-in molecular repair hair mask based on your length and density, starting at the ends and working up towards the roots.

Let sit for 4 minutes. Do not rinse out.

Comb, add product + style as usual. Use for 4-6 washes post-salon service, then as needed.