K18 Leave-In Molecular Repair Mask New In Box 1.7 ounce.

This leave-in treatment mask does cleanup duty after damage caused during bleaching, chemical services, and heat. Powered by the K18PEPTIDE™ to reconnect broken polypeptide chains and disulfide bonds to renew strength and elasticity in just 4 minutes. Powered by the patented K18PEPTIDE™, engineered over 10 years in a biotech lab to work on the molecular level to rebuild hair from the inside out in just 4 minutes. • Because the K18PEPTIDE™ works at the molecular level, it works on every single hair type • Clinically proven to reverse hair damage from: Bleach + Color, Chemical Services, Heat • Restores strength, softness, smoothness, and bounce • Immediate + progressive results • Vegan, color-safe, cruelty-free With just one salon treatment using the K18 PRO Service (PRO mist + PRO mask), hair is restored up to: • 91% original strength* • 94% original elasticity*