Leave-In Molecular Repair Hair MaskK18 Leave-In Molecular Repair Hair Mask, 15 ml (0.5 fl oz)

A mask that takes the place of conditioner

K18 is used straight after shampooing instead of a conditioner, and it is left in rather than rinsed out. The treatment is built around K18PEPTIDE, a patented peptide that the brand says works at a molecular level, where all hair is the same. The aim is hair that feels softer, stronger and bouncier.

Four minutes and no rinsing

After applying, you simply wait four minutes before styling as usual, so it fits into a normal wash routine without a long sitting time. Only a small amount is needed, and K18 stresses that less is more. The brand describes it as suitable for all hair types.

Pack details

The pump pack measures roughly 3.5 x 3.5 x 8.1 cm, with a listed weight of 50 g, and the listing gives the USA as the country of origin.

How to use

Shampoo, skip conditioner and towel-dry thoroughly. Apply 1-3 pumps from the ends up towards the roots (3-9 pumps for the 15 ml size). Wait four minutes and do not rinse.

Before you choose

This is a leave-in treatment, not a rinse-out mask or a daily conditioner, so it suits people happy to swap conditioner for it on treatment days. The exact volume and ingredient list were not given in the source, so contact us for the current label if you need to check them. US-market product: packaging and label wording may differ from UK versions.

Standard UK delivery: free on all orders. Estimated 2–3 working days after dispatch.

Express UK delivery: estimated 1–2 working days after dispatch. Free on orders over £75.

Please allow up to 2 working days for order processing; orders are often dispatched the next working day. Delivery times are estimates, not guarantees.

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