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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

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5,009 Reviews

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Recent Reviews

liviaplurabelle

Verified Buyer

5

5/2/2026

Spectacular, gimme 14 of them right now

This is my third bottle of it. I first tried it to get my hair in better shape before my wedding, but I might just keep buying it, even if it's pricey. My hair is fine and grows really slowly, and never got longer than shoulder length previously due to breakage and having to cut more to even it out, but it's definitely the longest it's ever been without looking scraggly and full of split ends. 10/10, no notes

Recommended

Originally posted on sephora.com

vinnikaur

Verified Buyer

2

5/1/2026

Very disappointed

As a Sikh woman who doesn’t cut her hair, I was looking for something that would help with split ends and help manage frizziness. This product made my hair incredibly dry and brittle. Would not purchase again.

Originally posted on sephora.com

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