
K18 Leave-In Molecular Repair Hair Mask
Best Overall
The leave in exception: a peptide treatment the brand publishes under molecular repair naming, used in place of conditioner, never rinsed out.
K18 changes the category rather than winning it on richness: a leave in peptide cream, published under the brand's own molecular repair naming, that replaces conditioner and takes four minutes with no rinse. For bleached, coloured or heat styled hair that looks and feels damaged, nothing else here works this way, and the listing is sold by K18 Hair itself.
Suits
Bleached, coloured, chemically serviced or heat styled hair that looks and feels damaged, and anyone who wants a treatment step that takes four minutes and no rinsing.
Skip if
Your hair mainly feels dry rather than damaged, or you enjoy a rich, creamy mask ritual. This is a light leave in cream dosed in pumps, and a moisture led jar such as the Moroccanoil mask will suit a pure dryness brief better.
- Size
- 50 ml / 1.7 fl oz
- Format
- Leave in cream, pump bottle
- Key Ingredients
- K18PEPTIDE (sh-Oligopeptide-78), hydrolyzed wheat protein, tocopherol
- Use
- After shampoo only, towel dry, 1 to 3 pumps, wait 4 minutes, do not rinse, as directed on the listing
- Hair Type
- All hair types, as printed on the listing

