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K18 haircare floating with a ribbon on a pink and purple backdrop

K18 - Science-backed repair. No coatings. No compromise.

K18 reverses hair damage at the molecular level with its patented biotech peptide — reconnecting the bonds broken by bleach, color, and heat. Color-safe, vegan, and built around clean, minimal formulations.
Carbon-neutral shipping on all orders

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A 118 ml bottle of K18 AirWash Dry Shampoo by K18 Hair Repair, featuring odorBIND™ biotechnology, is shown against a solid purple background.
K18 AirWash Dry Shampoo - Three-day clean. No white cast. Sale priceFrom $24.00
K18 hair mask bottle on a coral background with Allure award badge.
K18 Leave-In Molecular Repair Hair Mask - Hair repair, rewritten at the molecular level. Sale priceFrom $29.00
K18 Molecular Repair Hair Oil a Hair Repair
K18 Molecular Repair Hair Oil - Repair, shine, defrizz — in one drop. Sale price$65.00
A 250 ml bottle of K18 PEPTIDE PREP Detox Shampoo by K18 Hair Repair, formulated with K18PEPTIDE™ for advanced scalp cleansing, shown on a solid turquoise background.
K18 PEPTIDE PREP Detox Shampoo - 99% buildup gone. Color fully intact. Sale priceFrom $36.00
Sold outA bottle of K18 Hair Repair DAMAGE SHIELD pH Protective Shampoo (multiple sizes) with K18PEPTIDE™ is displayed against a blue background, featuring a circular label that reads "new name! same formula.
K18 DAMAGE SHIELD pH Protective Shampoo - Daily-use clean. No fillers. No stripping. Sale priceFrom $39.00
Sold outA 250 ml bottle of K18 Hair Repair Damage Shield pH Protective Conditioner, featuring K18PEPTIDE™, is displayed against a solid blue background.
K18 Damage Shield pH Protective Conditioner - Condition, fortify, defend. One step. Sale priceFrom $39.00
K18 AstroLift hair spray bottle on a blue background
AstroLift™ reparative volume spray - Volume that repairs while it lifts. Sale priceFrom $22.00
Sold outK18 HeatBounce hair product bottle on a pink background
HeatBounce - Heat protection from the inside out. Sale priceFrom $24.00

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