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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

4,707 Reviews

5

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3142

719

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Recent Reviews

Nimo

2

7/27/2025

Personally didn’t work for me

I was really excited to use this product as people seem to swear by it. However after using it several times I don’t think my hair is any better

Originally posted on Sephora-uk

jsgc

1

7/25/2025

Shouldn’t be on the market

Don’t buy this product. Unless you have the right hair type for it (who knows this? I didn’t) it will slam so much protein into your hair that your strands will stretch and snap. I used it twice—followed the directions to a T—and the breakage is outrageous. breakage

Originally posted on sephora.com

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