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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

4.7

868 Reviews

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Recent Reviews

AttilaGrace

Verified Buyer

1

7/17/2026

Do not buy.

I bought this with the matching shampoo. I feel like ive had a little more fallout than usual, and it really, really, dried my hair out. The conditioner is really thin, like V05 conditioner thin. The bottles seem cheaply made. Will not be purchasing again.

Originally posted on sephora.com

chloe123456678

Verified Buyer

2

7/8/2026

Not the same

K18 re-formulated this conditioner and it’s not the same. Much thinner and therefore less hydrating :/ the packaging has been downgraded too. Feels like a cheaper product all around. Will be trying something new next time!

Originally posted on sephora.com

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