just landed
NEW
AstroLift™ reparative volume spray
Send your hair into orbit with 2.5x more all-over volume*—powered by biotech.









your healthiest hair starts here
new
AstroLift™ reparative volume spray
Interdimensional biotech reverses bounce-depleting damage for 2-day hold
limited edition
new
jumbo leave-in molecular repair hair mask
4.7
Rated 4.7 out of 5 stars
8,136 Reviews
4-minute leave-in treatment - now in a limited edition jumbo size
bestseller
.png?v=1706135901220&transform=resize=150x150)
full-size leave-in molecular repair hair mask
4.7
Rated 4.7 out of 5 stars
8,136 Reviews
4-minute leave-in treatment to reverse hair damage
bestseller

K18 molecular repair hair oil
4.8
Rated 4.8 out of 5 stars
764 Reviews
Weightless oil that strengthens, repairs damage + reduces frizz

DAMAGE SHIELD protective conditioner
OUT OF STOCK
4.7
Rated 4.7 out of 5 stars
343 Reviews
Your everyday damage shield is back in stock early June.

DAMAGE SHIELD pH protective shampoo
4.7
Rated 4.7 out of 5 stars
394 Reviews
Color-safe protective shampoo maintains hair health + strength
PEPTIDE PREP™ detox shampoo
4.8
Rated 4.8 out of 5 stars
476 Reviews
Color-safe, non-stripping clarifying shampoo with the K18PEPTIDE™
real people, real results
see more #k18results


before
after
"I absolutely love this product!! You have to see it to believe it!"
- Christina Marie P.
full-size leave-in molecular repair hair mask
learn more
- Christina Marie P.


before
after
"Amazing the way it feels and the shine provides to the hair instantly."
- Sandra M.
full-size leave-in molecular repair hair mask
learn more
- Sandra M.


before
after
"I’ve been using this mask for about four washes so far. I feel that my hair is getting healthier."
- Olga S.
full-size leave-in molecular repair hair mask
learn more
- Olga S.


before
after
“…I had my hair chopped (it was begging for it) along with some highlights and coloring of the roots. My hair stylist used this on my hair and I absolutely loved how it made my hair feel ... I love this mask so much!”
- Ashley P.
full-size leave-in molecular repair hair mask
learn more
- Ashley P.


before
after
"It makes my hair so soft and weightless, I absolutely love it. Most of the product leave my hair greasy and I can’t even style it, and right after washing I have to put it in the bun. It’s a nightmare! But not with k-18. Makes my hair feel so luxurious, it’s like I just left the salon. Can’t recommend this product more!"
Anastasiia T.
full-size leave-in molecular repair hair mask
learn more
Anastasiia T.


before
after
"I normally don't use hair oils as my hair gets naturally oily....I loved the end result! I will officially be adding this hair oil to my routine"
- Fabiola N.
K18 molecular repair hair oil
learn more
- Fabiola N.


before
after
"My hair was thin and unhealthy after years of highlights . After a few months of using the leave in mask, my hair is healthy and so much fuller."
- Melissa K.
full-size leave-in molecular repair hair mask
learn more
- Melissa K.


before
after
"I recently heavily highlighted my hair to match the salt and pepper I started growing out months prior. The first time I washed my hair it was so dry and damaged looking. The next wash was using K18 and the difference was evident! My hair looks healthy and silky again."
- Mandy R.
full-size leave-in molecular repair hair mask
learn more
- Mandy R.


before
after
"...My hair dresser introduced me to this and I have been using it ever since! The visible difference this made with my hair...was absolutely breathtaking. Will not go back to another shampoo ever!"
- Hannah K.
DAMAGE SHIELD pH protective shampoo
learn more
- Hannah K.


before
after
"I use this alllll the time. It's truly saved my hair....And it's so gorgeous and shiny and the thickness is returning nicely."
- Emma L.
K18 molecular repair hair oil
learn more
- Emma L.


before
after
"I really like it, I was able to tint my hair again and it looks a little more thicker."
- Estefania M.
DAMAGE SHIELD pH protective shampoo
learn more
- Estefania M.
see the K18 difference



TikTok viral favorites

inspired by nature,
designed for you
designed for you
Using synthetic biology + biomimetics,
we solve hair concerns from the inside out.

