K18 Leave-In Molecular Repair Hair Mask — 1.7 fl oz Peptide Treatment for Bleach, Color & Heat-Damaged Hair, 4-Minute Repair

This lightweight, leave-in cream harnesses the patented K18PEPTIDE™ to reconnect hair’s internal structure where damage happens, not just the surface. Designed for all hair types, the formula targets weakened keratin chains to restore elasticity, reduce breakage, and improve manageability after just a few uses. Use as a short treatment after shampooing to jumpstart repair and maintain healthier-looking strands between salon services.

How quickly will I see improvement with the K18 peptide mask?

Most users notice softer, stronger hair after 2–3 applications, with immediate improvements in texture from the first 4-minute treatment. The concentrated peptide works during a single leave-in session and builds cumulative benefits when used over consecutive washes.

• Apply on towel-dried hair for four minutes — no rinse required.
• Recommended initial run: 4–6 consecutive washes for best results.
• Many report visible strength and bounce after only two to three treatments.

Can this mask repair damage from bleach, color, or heat styling?

The K18PEPTIDE™ is formulated to act at the molecular level, reconnecting polypeptide chains and disulfide bonds disrupted by bleaching, coloring, chemical services, and thermal tools. While it cannot reverse time, it can rebuild internal structure to reduce breakage and improve resilience along the hair shaft.

• Specifically designed to work on chemically treated and heat-exposed hair.
• Restores strength along both the length and width of the strand.
• Safe for repeated use as part of a maintenance routine.

How do I use the K18 Leave-In Molecular Repair Hair Mask in my routine?

Use after shampooing: skip conditioner, towel-dry, then apply 1–3 pumps depending on length and thickness. Let the mask sit for four minutes and do not rinse; follow with styling as usual. Repeating over successive washes accelerates restoration.

• Shampoo and towel-dry hair before application.
• Use 1 pump for short hair, up to 3 pumps for long or thick hair.
• No rinsing—leave the formula in and style normally.

Will K18 work on curly or coily hair?

Because the treatment repairs internal keratin links rather than just smoothing the outer cuticle, it’s effective across curl patterns and textures. It helps reduce breakage and tangling while improving elasticity and shape retention for curly, coily, and textured hair.

• Formulated to benefit all hair types, including coily and curly strands.
• Improves manageability and detangling without weighing hair down.
• Enhances bounce and definition alongside strength improvements.

Who is this for: K18 Leave-In Molecular Repair Hair Mask is intended for anyone with weakened, chemically processed, heat-stressed, or aging hair seeking a quick, leave-in peptide therapy. It suits salon-goers, at-home colorists, frequent stylers, and anyone wanting a science-driven way to restore resilience and softness without heavy conditioners or long rinse-out treatments.

• Size: 1.7 fl oz — travel-friendly and concentrated for multiple treatments.
• Key tech: patented K18PEPTIDE™ that mimics and reconnects keratin structure.
• Result focus: strength, smoothness, elasticity, and improved manageability.

Ingredients

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.