K18 bioscientists spent 10 years studying hair biology to find the ultimate reconnector for next-level hair repair—here’s what they discovered.

The groundbreaking K18PEPTIDE™ is optimized for human biology and uniquely matches and clicks into hair’s keratin structure, reconnecting damage at the molecular level. This biomimetic molecule repairs all hair types within the innermost layers across multiple types of bonds including polypeptide chains and disulfide bonds to reverse damage from bleach, color, chemical services, and heat*.

how K18PEPTIDE™ powers the K18REPAIR™ service

K18PEPTIDE™ is biomimetic, which means it mimics hair’s biology, allowing it to remain in hair and not wash out like a topical hair treatment or conditioner.

This biomimetic peptide has the perfect composition and shape to click into your hair like a puzzle piece. It reconnects the keratin chains in hair’s structure to restore strength and elasticity, connecting multiple types of bonds (including disulfides) to deliver true, holistic molecular repair from the inside out.

At the innermost layers of hair are the polypeptide chains which are responsible for hair’s core strength and elasticity. When hair is exposed to damaging elements like bleach, harsh chemicals + heat, those chains break down and disconnect leaving hair weakened and dull.

K18PEPTIDE™ peptide penetrates past the hair’s cuticle to reach these damage sites at the innermost layers and reconnect the broken chains to renew strength + elasticity in just 4 minutes.

This biotech-powered and biology-first approach understands what hair needs on a biological level, making it the most advanced form of hair repair today.

the K18REPAIR™ results

Healthier hair through every salon transformation with fewer steps, less time, and less waste.

Discover the K18 difference with the K18REPAIR™service: 2 steps, 4 minutes each, no extra rinse.

It includes the K18 PRO molecular repair mist + K18 PRO molecular repair mask, both powered by this unique K18PEPTIDE™to deliver holistic hair health for every client and every service.

*k18hairpro.com/disclaimers