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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

4.0

15 Reviews

5

4

3

2

1

9

3

0

0

3

Recent Reviews

Maira

4

10/7/2026

Will definitely recommend the mask!

I love the leave in mask for my hair! I have 3b/3c coarse curls and after a disastrous haircut earlier this year I’ve been straightening my hair a lot. I feel like mask has helped prevent the amount of damage I would get in the past and revives my curls. Sometimes I do a deep conditioner treatment after waiting the 4 min but also works well without if I’m in a hurry. Will definitely purchase the mask again! Heat protectant is nice but i have quite a few and don’t always reach for this one. It does leave my hair feeling soft. Shampoo was also good but not my favourite. I’m glad I tried it but I wouldn’t be in a rush to buy it again.

Originally posted on Sephora-uk

aeroberts

Verified Buyer

5

9/7/2026

The healthiest my dyed blonde hair has ever looked

I have this set plus the volume spray and I have to say I’m extremely happy with how shiny, bouncy, thick and healthy my hair looks. Before this product, my fine thin hair looked damaged and had no shine. I bleach it and abuse it daily heat styling, and this makes it look like hydrated, virgin hair. Also I’ve tried protein products and olaplex, but both made my hair feel stiff and straw-like. Not the k18! I love it.with

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Originally posted on sephora.com

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