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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

4,727 Reviews

5

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3153

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Recent Reviews

melissadsims

2

9/7/2025

Wanted to like it so bad

I wanted to like this - even went through two bottles in my attempt to make it work for me. But it’s just not it. It’s so heavy it makes my hair feel coated and like I need to wash it again immediately. I have fine hair and it’s just too heavy. Everyone raves about it but it doesn’t work for me. I saw very little benefits for all the gross feeling I had to endure in my hair. Won’t be repurchasing.

Originally posted on sephora.com

unknowndiana

5

9/7/2025

Good add on for bleached dry limp hair

My hair is extremely processed- over 8 years of balayage. I use this product on and off. I haven't used this product in 6 months. I decided today to try it again, and wow what a difference.

Recommended

Originally posted on sephora.com

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