K18 DUO Leave-In Molecular Repair Hair Mask 15ml and 50ml

K18’s DUO Leave-In Molecular Repair Hair Mask is a leave-in treatment designed to help reverse the look of damage at the hair’s core. Powered by the patented K18PEPTIDE, it works by reaching the innermost layers of hair and supporting the re-connection of broken keratin chains linked with strength and elasticity. Best of all, it’s a quick, no-rinse step that fits easily into your wash-day routine.

Expect key benefits like improved manageability and a more resilient feel, with results developing through repeat use. It’s a great option for hair that’s been affected by bleach, colour, or other chemical services, especially when you want a repair “reset” without an extra rinse-off mask step.

Notable technology and ingredients include K18PEPTIDE (sh-Oligopeptide-78). The formula also lists Hydrolyzed Wheat Protein plus wheat-derived film formers for conditioning support, alongside Tocopherol for antioxidant care. For the DUO, you also get a set that’s made to gently cleanse and help protect with every wash as part of a paired routine.