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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

1,145 Reviews

5

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1

889

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70

Recent Reviews

Unknown

5

3/11/2026

Couldn't maintain a healthy blonde without it

I have very long, icy bleach blonde hair but am naturally a mousy brown. Since using this daily for a few months my hair is thicker and longer because of less breakage. I'm on my 3rd repurchase and seriously would not be able to be as blonde as I am, with hair as healthy and long as it is without this. I run it through the ends of my hair almost daily.

Recommended

Originally posted on sephora.com

Vallygirl82

Verified Buyer

5

3/11/2026

a must have!

This must be witchcraft! I bought this oil over other oils because of its repairative qualities.My front layers looked damaged because I use heat every day. one and a half drops to the front layers, endds mostly, and it looks like brand new hair. I am not exaggerating.if you are on the fence, get it! you won't be sorry. I feel like that trim I was planning to get is no longer needed.

Recommended

Originally posted on sephora.com

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