K18 Leave-In Peptide Hair Mask 1.7 fl oz, Limited-Edition Scent — Repairs Color & Heat Damage in 4 Minutes

This limited-edition collaboration blends K18’s patented peptide technology with a biotech fragrance developed by Future Society, creating a multitasking leave-in hair mask that targets damage at the molecular level. Designed for use after shampooing and left in the hair, the formula aims to reconnect hair’s inner structure to improve strength, texture and manageability across all hair types without heavy residue.

How does this mask repair severely damaged or chemically treated hair?

The K18PEPTIDE is engineered to penetrate past the cuticle and interact with keratin chains inside the cortex. By mimicking and reconnecting peptide chains and disulfide bonds, the treatment supports structural recovery rather than only coating the surface, helping strands regain tensile strength and elasticity.

• Patented peptide targets inner hair bonds for structural repair.
• Formulated for post-bleach, color, chemical or heat damage.
• Visible improvements often after 2–3 uses, with cumulative benefits.

How do I use it to get the best results in a fast routine?

Use the product on freshly shampooed, towel-dried hair and skip conditioner to allow penetration. Dispense 1–3 pumps depending on density and length, distribute evenly, leave on for four minutes, then style—do not rinse out the product.

• Apply to clean, damp hair; adjust pump count by length and thickness.
• Leave in for four minutes—no rinse required—then style normally.
• Recommended initial protocol: use for 4–6 consecutive washes, then maintain as needed.

Will this work on curly, coily, or fine hair without weighing it down?

Because K18’s peptide repairs internal structure instead of only adding surface moisture, the lightweight leave-in format is suitable for a broad range of textures. It aims to restore strength and elasticity while maintaining bounce, so results can be seen on fine, straight, wavy, curly and coily hair.

• Light cream formulation designed to avoid heaviness on finer strands.
• Improves detangling and manageability for textured hair types.
• Works on all hair types by addressing core structural issues rather than surface coating.

What makes the limited-edition scent different and how long will it last?

The scent is a collaborative biotech fragrance inspired by extinct flower DNA, created to complement the treatment experience without overpowering the hair. Fragrance longevity depends on individual hair porosity and styling routine; it provides a subtle multisensory finish that accompanies the restoration benefits.

• Biotech-developed scent gives a distinct, delicate aromatic layer.
• Formulated to be a complimentary sensory element, not the primary function.
• Scent intensity varies with hair type, porosity and environmental exposure.

Who is this for: This product suits anyone who wants a fast, science-backed repair step after chemical services or frequent heat styling—salon clients, at-home colorists, and people with textured hair who need structural restoration. It’s particularly useful for those seeking noticeable improvements in strength, elasticity and manageability without a long leave-in or rinse-out step. Avoid use if you have a known sensitivity to any listed ingredients or prefer fragrance-free treatments.

Ingredients

Water (Aqua) (Eau), Alcohol Denat., Propylene Glycol, Cetearyl Alcohol, Dicaprylyl Ether, Cetyl Esters, Behentrimonium Chloride, Polysorbate 20, sh-Oligopeptide-78, Hydrolyzed Wheat Protein, Hydrolyzed Wheat Starch, Isopropyl Alcohol, Tocopherol, Phenoxyethanol, Potassium Sorbate, Citric Acid, Fragrance (Parfum), Benzyl Alcohol, Benzyl Salicylate, Beta-Caryophyllene, Citrus Aurantium Bergamia Peel Oil, Limonene, Linalool, Linalyl Acetate, Pinene, Terpineol, Terpinolene, Tetramethyl Acetyloctahydronaphthalenes.