K18 Hair | Biomimetic Hairscience

start fresh, no sweat.

Refresh sweat, oil, and odor for up to 3 days*.

SHOP AirWash™

your healthiest hair starts here

AstroLift™ reparative volume spray

4.5

Rated 4.5 out of 5 stars

215 Reviews

Interdimensional biotech reverses bounce-depleting damage for 2-day hold

jumbo leave-in molecular repair hair mask

4.7

Rated 4.7 out of 5 stars

8,183 Reviews

4-minute leave-in treatment - now in an exclusive jumbo size

Please select a size

full-size leave-in molecular repair hair mask

4.7

Rated 4.7 out of 5 stars

8,183 Reviews

4-minute leave-in treatment to reverse hair damage

Please select a size

AirWash™ dry shampoo

4.6

Rated 4.6 out of 5 stars

495 Reviews

Revolutionary dry shampoo for a fresh hair + scalp—even after your toughest workout

Please select a size

K18 molecular repair hair oil

4.8

Rated 4.8 out of 5 stars

782 Reviews

Weightless oil that strengthens, repairs damage + reduces frizz

Please select a size

DAMAGE SHIELD protective conditioner

4.7

Rated 4.7 out of 5 stars

358 Reviews

Your everyday damage shield is back in stock early June.

Please select a size

DAMAGE SHIELD pH protective shampoo

4.7

Rated 4.7 out of 5 stars

401 Reviews

Color-safe protective shampoo maintains hair health + strength

Please select a size

PEPTIDE PREP™ detox shampoo

4.8

Rated 4.8 out of 5 stars

488 Reviews

Color-safe, non-stripping clarifying shampoo with the K18PEPTIDE™

Please select a size

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

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

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

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

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

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

before

after

"My hair has been a mess for years... My new hair stylist recommended K18! ... My hair looks and feels amazing with lasting results!!" - Arnell M

full-size leave-in molecular repair hair mask learn more

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

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

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