Repair and protect damaged hair with the K18 Professional Molecular Repair Hair Mist. It is a leave-in treatment that contains a patented bioactive peptide called K18 Peptide designed to penetrate the hair shaft and repair damage at the molecular level. This peptide improves the strength, elasticity and overall health of the hair and provides protection against future damage. By using the K18 Professional Molecular Repair Hair Mist renew hair without weighing it down. Lightweight and silky texture Repair and protect damaged hair Vegan, color-safe and cruelty-free Restores strength, softness and smoothness.