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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

4.2

256 Reviews

5

4

3

2

1

175

27

9

15

30

Recent Reviews

Samanthad27

1

6/1/2025

Hair Loss

I used this product twice it has caused severe hair thinning and scalp sensitization. This was the only change to my hair care routine and the hair loss has continued even after I stopped using the product. Other reviewers have mentioned the same issue. Please beware of this product.

Originally posted on sephora.com

Teresasulli

1

5/24/2025

Do not recommend

I used this product twice and everytime I had tons of hair fall out. I have very thick hair so it’s not abnormal for my hair to fall out but I’ve had this much hair fall out in my life. I would just put my hands through my hair and there just be a giant ball of hair. Super disappointing as I was pretty excited to use this.

Originally posted on sephora.com

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