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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

4.4

3,803 Reviews

5

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2

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Recent Reviews

ayayayaya

Verified Buyer

1

2/3/2026

This product has done absolutely nothing to my hair. I say this as someone who has been using this product for 8 consecutive washes and has purchased the molecular repair oil. I have severely damaged hair to the point it breaks off every time I touch it due to a lot of heat damage that I cannot even retain length. I’ve been looking for all kinds of bond repairs and this seems to be the most hyped up and strongest one in the market, pricy too but I was willing to purchase every product in their line if it was that effective. My hair looks the first exact same. No improvement in split ends nor did the breakage stop. I’m disappointed in this product considering its hype

Originally posted on sephora.com

CatarinaR4

Verified Buyer

5

2/1/2026

Probably the only reason i still have healthy hair even tho i bleach it every month. Worth every penny

Recommended

Originally posted on sephora.com

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