K18 Professional Molecular Repair Hair Mask

What It Does

The K18 Professional Molecular Repair Hair Mask is the gold-standard in-salon treatment for reversing hair damage at the deepest level. Powered by the patented K18PEPTIDE™, this leave-in mask seamlessly fits into hair's keratin structure to reconnect broken polypeptide chains and disulfide bonds — the exact bonds damaged by bleach, colour, chemical services, and heat. Results are visible after the first application and build with every use.

Key Benefits

•       Clinically proven to reverse hair damage from bleach, colour, chemical services, and heat

•       Restores strength, softness, smoothness, and bounce in just 4 minutes

•       Works at the innermost layers of hair — not just the surface

•       Effective on all hair types including coily, curly, wavy, and straight

•       Leave-in formula — no rinsing required

•       Boosts texture, manageability, and natural bounce

Who It's For

All hair types with any level of damage from chemical services, heat styling, or environmental stress. Recommended as a post-service treatment in professional colour and bleach appointments.

How To Use

Shampoo hair and skip conditioner. Towel-dry thoroughly. Apply 1–3 pumps of the mask from ends to roots (up to 9 pumps for very long or dense hair). Leave in for 4 minutes without rinsing. Do not apply conditioner before this step, as it can block the peptide from penetrating the hair shaft.

Pro Note

For in-salon use, apply as the final step of the K18REPAIR™ service after shampooing with PEPTIDE PREP™ Detox Shampoo. Do not condition between shampoo and mask application.