K18 Leave-In Molecular Repair Hair Mask 50ml is a revolutionary, biotech-powered treatment designed to reverse hair damage at the molecular level. Infused with the patented K18PEPTIDE™, this leave-in mask restores strength, softness, and elasticity in just 4 minutes. It effectively repairs damage caused by bleaching, coloring, heat, and chemical treatments. Unlike traditional conditioners, K18 penetrates deep into the hair cortex to reconnect broken keratin chains, ensuring long-lasting results. Lightweight and silicone-free, it nourishes without buildup, leaving hair smooth, resilient, and frizz-free. Ideal for all hair types. Apply to damp hair, leave in, and style as usual—no rinse needed.