K18 Biomimetic Hairscience Professional Leave-In Molecular Repair Mask 5 fl. oz.

Full-Size Leave-In Molecular Repair Hair Mask is a salon-grade, leave-in treatment that repairs hair on a molecular level in just 4 minutes. Powered by the biotech-developed K18PEPTIDE™, the formula reconnects broken polypeptide chains (and as a result also reconnects disulfide bonds) to restore strength, softness, smoothness and bounce—delivering immediate and lasting reparative results after chemical, color and heat damage.