K18 Leave-In Molecular Repair Hair Mask — 1.7 fl oz Peptide Treatment, 4-Minute Damage Reversal for Bleached & Color-Treated Hair

This concentrated, leave-in cream uses the patented K18PEPTIDE to restore hair at the molecular level, reconnecting internal chains and improving texture, elasticity, and manageability. Designed to work beneath the cuticle rather than only coating the surface, the formula targets damage from bleaching, coloring, chemical services, and thermal styling. Results are visible after just a few uses and the product is suitable for all hair textures.

How quickly will I notice improvement after using K18?

Many users report tangible improvements in texture, smoothness, and reduced breakage after 2–3 consecutive applications; the mask is formulated to act in just four minutes per treatment. For best results, follow the recommended protocol of applying across 4–6 consecutive washes initially, then as maintenance.

• Visible smoothing and improved slip after the first few uses.
• Strength and elasticity increase with repeated early treatments.
• 4-minute processing time — leave in, do not rinse.
• Use 1–3 pumps depending on hair length and thickness.

What types of damage does the peptide mask address?

The K18PEPTIDE is engineered to reconnect polypeptide chains and influence disulfide bonds inside the hair shaft, which helps reverse signs of structural damage. It is aimed at the root causes of mechanical and chemical weakening rather than only smoothing the outer cuticle.

• Repairs damage from bleaching and color services.
• Helps reverse effects of chemical treatments and perms.
• Reduces sensitivity to heat styling by strengthening internal structure.
• Improves strand resilience for curl, coil, and straight hair.

How do I use the K18 leave-in mask for best results?

Apply K18 to clean, towel-dried hair after shampooing; skip conditioner before applying the peptide treatment. Dispense 1–3 pumps through mid-lengths to ends, wait four minutes, then proceed to style — no rinse required.

• Shampoo and gently towel-dry hair; do not condition first.
• Work 1–3 pumps evenly through mid-lengths and ends.
• Let product sit for 4 minutes; do not rinse.
• Style as usual; use consecutively for initial repair phase.

Will K18 work for my hair type and routine?

Because this mask targets the inner structure of the hair, it is effective on fine, straight, wavy, curly, and coily textures. The leave-in format integrates easily into most routines: use during your wash day and then continue regular styling and maintenance products as needed.

• Safe for color-treated and chemically processed hair.
• Suitable for all textures, including coarse and curly hair.
• Minimal time commitment — 4 minutes per application.
• Most users transition to maintenance applications after an initial repair cycle.

Who is this for: K18 Leave-In Molecular Repair Hair Mask is aimed at anyone who wants to rebuild strength and improve manageability after chemical or heat exposure — from salon-treated color clients to daily-styled hair. If you notice breakage, loss of elasticity, frizz, or dullness and prefer a quick, leave-in solution with measurable improvement, this peptide treatment is formulated to fit into your wash-day routine.

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.