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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

4.5

870 Reviews

5

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2

1

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Recent Reviews

beccanewton

Verified Buyer

4

3/7/2026

Good Work

I used this product once a week for a detox from product buildup. It effectively cleans my hair without feeling like it’s being stripped. The colour caught me off guard and I’m not the biggest fan of the scent but it’s effective

Recommended

Originally posted on sephora.com

Shantel731

Verified Buyer

1

3/2/2026

Scalp irritation and itchiness

I only used this product once for wash day. I washed 2x and then followed up with my own deep conditioner. I noticed scalp irritation on the second wash and didnt really think anything of it. After rinsing out the deep conditioner and styling, the irritation continued and my scalp became VERY itchy. This is my first K18 product and now, I'm hesitant to try the rest of the line. Very dissapponted.

Originally posted on sephora.com

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