K18 Biomimetic Hairscience™, Leave-in Molecular Repair Hair Mask

10 Years of Biosciences Research1 Breakthrough Peptide Patented K18 is not just a temporary fix - it's the first product to utilize biomimetics to reconnect keratin chains once broken by bleach, color, and chemical services, resulting in soft, smooth, strong hair with bounce that feels like new. The more damaged the hair, the more dramatic the results.