K18 Leave-In Molecular Repair Hair Mask 50ml

The K18 Leave-In Molecular Repair Hair Mask is a genuinely clever product that works differently to traditional hair masks. Rather than simply coating the hair, it uses K18’s patented peptide technology to reconnect broken keratin chains deep within the hair structure — reversing damage caused by chemical treatments, heat styling, and colouring over time. The result is hair that feels noticeably stronger, softer, and more elastic, even after the first use.

This 50ml size is ideal whether you’re trying K18 for the first time or keeping a handy travel-sized version in your kit. It suits all hair types and is particularly brilliant for anyone whose hair has been through the wringer — think bleaching, perming, or repeated heat styling. Because it’s a leave-in treatment, there’s no rinsing involved, which makes it incredibly easy to build into your existing routine. K18 Haircare has become a firm favourite with both professional stylists and everyday users, and it’s easy to understand why.