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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

302 Reviews

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Recent Reviews

nadiatag

1

9/29/2026

STAY AWAY

Absolutely awful shampoo. I jumped the gun and got too excited after using it once and believing I liked the results, but nope. It’s horrible after consistently using it. I hate everything about it. It made my hair fall out much more than what I usually lose during hair washing. Thankfully I have very long hair, and lots of it, but this shampoo made my hair feel brittle, flat, dry, and it leaves a nasty, waxy-like, thick coating all over the hair. Would never recommend. I washed my hair with it one day (after buying another shampoo and just leaving the k18 in my bathroom stock because I purchased such a large bottle) because I was in a pinch and just had just worked out, and I had a salon appt. the next day, and when my hair stylists touched my hair she even commented on the awful texture, waxiness, and tangles that are not typical for my normal hair. For the price, this product is a joke.

Originally posted on sephora.com

pcatstone

Verified Buyer

5

9/23/2026

Must have in my hair routine

I love this shampoo. I have bought it many times. It leaves hair and scalp feeling clean. It does not weigh down my fine thin hair and provides volume.

Recommended

Originally posted on sephora.com

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