Unlock your gifts
K18 Biomimetic Hairscience
Get hair like new* with K18's biology-first haircare, designed to make the impossible possible.
Shop Now
Reviews
Recent Reviews
happyroach
Verified Buyer
5
2/10/2026
It actually works!
I box dye my roots/whole head every 5 weeks, so my hair takes a lot of damage. Since using K18, there’s clearly less breakage when I wash/brush/style my hair. Worth every penny!
Recommended
Originally posted on sephora.com
salome1111111
Verified Buyer
1
2/6/2026
This product makes your hair look fried it doesn’t work it is way too expensive Dave yourself the time money and disappointment and don’t buy it
Originally posted on sephora.com