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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

4,964 Reviews

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Recent Reviews

AbiKaii

Verified Buyer

4

4/2/2026

have to know when and how to use it

I want to make this clear. the product does work. you just have to know how and when to use it. I love it ans i didnt the dirst time i used it because i didn't conditionmy hair. if you have medium or coarse or chemically treated hair, even though it says do not condition, please wait the 4 minutes minimum and then condition your hair. also, less really is more with this product. if you have shorter fine hair I really would say start with 2 pumps, rub it between your hands until it turns white and get that product as evenly across your strands as possible. as for the when to use this, that's harder to know if youre not a professional so just use it every few weeks or so especially if you had a chemical treatment done because too much of anything can almost be worse sometimes.

Recommended

Originally posted on sephora.com

Unknown

5

4/2/2026

Best bond repair

My favourite bond repair product. No faff, super easy to use. Hair does feel stronger too!

Originally posted on Sephora-uk

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