Revive and strengthen damaged hair with the K18 Leave-In Molecular Repair Hair Mask (50ml) — a cutting-edge treatment powered by biomimetic science. Unlike traditional conditioners and masks that only coat the hair, K18’s patented peptide technology works at the core of the hair fiber to repair broken keratin chains, restoring strength, smoothness, and elasticity from the inside out.

Ideal for hair that’s been exposed to coloring, bleaching, heat styling, or chemical treatments, this leave-in mask delivers visible results in just 4 minutes — no rinse needed. It’s clinically proven to restore up to 91% of original strength and 94% of original elasticity after damage.