1. Shampoo only, do not condition. Towel-dry thoroughly.

2. Apply 1-3 pumps of K18 leave-in molecular repair hair mask based on your length, density, starting at the ends and working up towards the roots.

3. Let sit for 4 minutes. Do not rinse out.

4. Comb, add product and style as usual. Use for 4-6 washes post-salon service, then as needed.

Takes damage repair further — reconnects both polypeptide chains and disulfide bonds for strength throughout the hair’s length and width, delivering comprehensive, lasting repair.

Restores even extreme damage — working deep within the hair’s core to renew strength and elasticity, leaving hair strong, smooth, and bouncy.

Delivers immediate and lasting results — repairs hair from the very first use, with benefits that continue beyond your next wash.

Simplified repair — convenient leave-in formula works in just 4 minutes, with no rinsing required.

Effective on all hair types — K18PEPTIDE™ works at the molecular level, making it suitable for every hair type.

Water (Aqua) (Eau), Alcohol Denat., Propylene Glycol, Cetearyl Alcohol, Dicaprylyl Ether, Cetyl Esters, Behentrimonium Chloride, Polysorbate 20,sh-Oligopeptide-78 (K18PEPTIDE™), Hydrolyzed Wheat Protein, Hydrolyzed Wheat Starch, Isopropyl Alcohol, Tocopherol, Phenoxyethanol, Potassium Sorbate, Citric Acid, Fragrance (Parfum), Geraniol, Linalool, Hexyl Cinnamal, Benzyl Alcohol.

• K18PEPTIDE™ is a biotech-developed peptide that mimics hair’s natural structure, reversing damage by reconnecting polypeptide chains and disulfide bonds broken during bleaching, colouring, chemical treatments, and heat*.
• pH-optimised (5.0–6.0) to minimise cuticle swelling and restore hair proteins to their most resilient state.
• Cream formula allows for easy, lightweight application on all hair types, providing detangling and softening benefits.
• Vegan, colour-safe, and cruelty-free.

*k18hair.com/disclaimers