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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

400 Reviews

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1

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Recent Reviews

LittleParadox

Verified Buyer

5

3/4/2026

Clean, Bouncy Volume Without the Weight

I’ve been really impressed with this spray. I usually rely on mousse for volume, but it can sometimes feel a little heavy or leave my hair looking stiff. This completely replaces the need for mousse for me. I spray it onto sections while blow-drying and it gives my hair great lift and bounce without weighing it down. My hair still looks clean and soft, just with noticeably more volume. I have fine hair that can get weighed down easily, and this keeps it looking light and bouncy instead of stiff. It also smells really nice, which is a bonus. If you want volume without the heaviness that can come with mousse, this is definitely worth trying.

Recommended

Originally posted on sephora.com

ZuzaK91

1

2/16/2026

Useless

Did absolutely nothing for my fine thin blonde hair and probably made it greasy faster.

Originally posted on sephora.com

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