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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

242 Reviews

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1

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Recent Reviews

rachiebby

Verified Buyer

5

6/21/2026

Excellent!!! Just follow up with conditioner

I have dark blonde hair with light blonde highlights. My hair gets super brassy! I only color/tone every 12 weeks. This made a HUGE difference in my hair. I only used 6 pumps, lathered up and let it set for 3 minutes minute. Immediately followed with a good conditioner, which I left on for five minutes.

Recommended

Originally posted on sephora.com

megtc

Verified Buyer

5

6/12/2026

Perfect purple shampoo

I wish I took a before picture, because this shampoo removed some much brassiness/golden tone. I have tried Olaplex and Kerastase, this k18 is elite. Perfect color and leaves my hair so much softer than the others!

Recommended

Originally posted on sephora.com

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