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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

256 Reviews

5

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1

220

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Recent Reviews

spunkymonkey

5

11/1/2026

Cool blonde

Alright girls. I have a cool toned blonde. I will tell you: this works extremely well. Your hair will look blonde as hell. Here’s the thing though: Your hair will feel dry when you wash it out. So here’s your routine: Use this in your hair. Use a deep conditioning mask immediately afterwards. Your hair will look blonde and stunning. It works well. Just use that formula. Trust. I have been using this for nearly a year. Buy it.

Recommended

Originally posted on sephora.com

traviesa17

5

10/10/2026

Must have

Bright blonde every time! I highly recommend this purple shampoo. Even my coworkers noticed the difference and thought I dyed my hair again.

Recommended

Originally posted on sephora.com

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