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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

4.3

5,033 Reviews

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Recent Reviews

GRACE

3

5/16/2026

In on my second bottle purely because I bleach my hair and have heard this does amazing things for repairing damage... I think it's ok, not sure what I expected but maybe more for the price point: if you use to much on fine hair or leaves a thick residue so you need to be sparing with the amount used.

Originally posted on Sephora-uk

Alycia85

Verified Buyer

3

5/16/2026

This is a NO

I don’t understand this product. I’m supposed to use it without conditioner, but my hair was like grass and this product did not make it smooth and am I supposed to walk around with frizzy hair for plus it’s insanely expensive three days until my next wash?

Originally posted on sephora.com

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