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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

5,114 Reviews

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Recent Reviews

Millix

Verified Buyer

5

8/25/2026

THIS SAVED MY HAIR!!!

This literally restored my hair within three washes. I have never dyed my hair so I never thought I needed something like this. Found out I was super deficient in vitamin d and started to experience extreme breakage. This has made my hair so soft, bouncy, now finally holds a curl again and my hair just looks so healthy. I didn't like putting the mask after shampoo and then stying, I preferred shampoo, mask, don't rinse, conditioner and then rinse like normal. Make sure to rub between hands for 30 secs to really work in the product before putting in hair! Highly highly recommend!

Recommended

Originally posted on sephora.com

Jessthinks

Verified Buyer

1

8/21/2026

Made my hair so much worse

I ended up returning after two uses. It made my curly hair brittle and weak. I’m still trying to restore my hair to how it was. For reference I am a curly hair 2C type.

Originally posted on sephora.com

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