K18Peptide™ is the patented molecular breakthrough clinically proven to reverse hair damage from: bleach + color, chemical services, and heat in just 4 minutes. Renew strength, softness, smoothness, and bounce for hair like new.

Shop K18 Biomimetic Hairscience’s Molecular Repair Hair Oil at Sephora. This hair oil strengthens, repairs damage, reduces frizz, and improves shine.

K18's at-home leave-in treatment helps to restore hair's core structure. Repair and renew your hair with the patented K18Peptide™ after one use.

Weightless & silicone-free, this oil repairs damage that causes frizz long-term. Our K18PEPTIDE™ repairs hair at a molecular level across multiple types of bonds, restoring hair health for all. Apply 1-3 drops to damp hair, starting at mid-length & working into the ends. Wait 4 minutes. Lastly, use 1-3 drops on dry hair as finisher.

Revolutionary dry shampoo reduces oil + odor—weightlessly. Shop all hair repair products from K18 Hair. Clinically proven to reverse hair damage in just 4 minutes. Get soft, smooth, strong, bouncy hair that feels like new - no matter what you put it through.

Say goodbye to those bad hair days with the revolutionary K18 Molecular Repair Hair Oil. This biotech-engineered weightless oil is the ultimate solution for all your hair concerns. No matter your hair type, this oil works its magic to strengthen, repair damage, and reduce frizz at not just one but two levels of the hair fiber.

K18's at-home leave-in treatment helps to restore hair's core structure. Repair and renew your hair with the patented K18Peptide™ after one use.

K18Peptide™ is the patented molecular breakthrough clinically proven to reverse hair damage from: bleach + color, chemical services, and heat in just 4 minutes. Renew strength, softness, smoothness, and bounce for hair like new.

Weightless Hair Treatment Oil For Curly, Frizzy & Coarse Hair - 3.38 FlOz. Leave-In Repair Hair Mask, 4-Minute Speed Treatment, Renews Hair Damage From Color, Chemical Services Heat (1 of each 50ml & 15ml). This product has sustainability features recognized by trusted certifications.