K18 Molecular Repair Mask

K18 Leave-In Molecular Repair Hair Mask

What it does

K18 Leave-In Molecular Repair Hair Mask is a leave-in treatment that repairs damaged hair from the inside out. Using K18's patented peptide technology, it reconnects broken keratin chains while helping restore the hair's structural integrity, including damaged disulfide bonds caused by bleaching, colouring, heat styling and chemical services. Rather than simply coating the hair, it repairs the internal structure to leave hair stronger, healthier and more resilient.

Why I recommend it

If your hair is breaking, snapping or feeling seriously damaged, this is the first product I recommend. It's my favourite repair treatment because it works where the damage has actually occurred, not just on the surface of the hair. If you want the quickest improvement in how your damaged hair feels, this is the product I'd choose every time. I've seen incredible results on over-processed blondes, with hair feeling noticeably stronger, softer and more manageable after just a few uses. It's one of the few products I genuinely believe lives up to the hype.

Best for

- Bleached or highlighted hair

- Chemically treated hair

- Heat-damaged hair

- Hair that is breaking or snapping

- Weak, brittle or overprocessed hair

- Anyone wanting long-term hair repair

How to use

Shampoo your hair, towel dry thoroughly and do not apply conditioner first. Apply 1 to 4 pumps depending on your hair length and thickness, concentrating on the mid-lengths and ends. Leave for 4 minutes before styling as usual. Use for the first 4 to 6 washes, then every 3 to 4 washes to maintain results.