K18's Leave-In Molecular Repair Hair Mask is a leave-in treatment designed to repair damaged hair. Thanks to its patented K18PEPTIDE™ peptide, it works at the molecular level to restore hair's strength, softness, suppleness and elasticity, even after damage caused by bleaching, coloring, chemical treatments or heat. 

This mask penetrates to the heart of the hair fiber to reconnect broken keratin chains, providing long-lasting repair. Its light, leave-in formula is suitable for all hair types and does not require conditioner.