Your New Lip Essential.

Discover Make Up For Ever Artist Lip Balm, made for comfortable, everyday wear.Shop Now

K18 = Sephora

K18 Biomimetic Hairscience

Get hair like new* with K18's biology-first haircare, designed to make the impossible possible.

Shop Now

Reviews

4.3

5,112 Reviews

5

4

3

2

1

3417

763

277

199

456

Recent Reviews

weez1

Verified Buyer

5

8/20/2026

Thank you K18 for saving my broomstick straw hair!

This mask has SAVED my hair. I got highlights for the first time in probably a decade, and after using box dye for the past several years. When I tell you my hair was fried, words cannot describe how dry and crunchy it was. I have tried countless shampoos, conditioners, masks, treatments, serums, etc. to try and hydrate and repair my hair. Olaplex has gotten it partway there (and I'm now using 4, 5, and 5L) but the K18 mask made a SIGNIFICANT difference that I could tell from the first use. I literally almost cried from relief! I'm now about to finish the 6th application for the repair phase and while there are some spots that were too far gone to save, overall my hair is *almost* back to where it was before highlighting. I'll continue to use this every other week or as needed for maintenance. It is pricey but absolutely worth every penny for me. Note: I don't use this exactly as directed. I take 3 pumps (of the mini size) and rub between my hands until it looks like a paste. I apply to the most damaged areas first, then run through the rest of my hair. Three more pumps and apply mostly to the ends. After the four minutes, I apply conditioner over it, finish my shower routine, then rinse both out. I do not leave it in. I read about this online, and the Sephora rep also said that's how she uses it and she had great hair!

Recommended

Originally posted on sephora.com

grishma1

5

8/14/2026

amazing 😍

i lovee k18!! i have thick, mid back length hair and this bottle lasted me about a month. my hair was so so healthy when i used this and i would definitely repurchase !

Recommended

Originally posted on sephora.com

Home

Shop

Stores

Account