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K18 = Sephora

K18 Biomimetic Hairscience

Get hair like new* with K18's biology-first haircare, designed to make the impossible possible.

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Reviews

4.5

901 Reviews

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Recent Reviews

mbrush15

Verified Buyer

5

7/19/2026

The best clarifying shampoo I've ever used. It builds up to a good lather and effectively cleanses the scalp without causing dryness.

Recommended

Originally posted on sephora.com

veganwoman

Verified Buyer

5

7/19/2026

A weekly must before K18 leave in treatments

In order to get the best results with K18 leave in treatment, you need to get all the build up stuff out so that the treatment can penetrate. It's my first time buying this product as I used other prep items but this one is best matched with K18.

Recommended

Originally posted on sephora.com

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