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

Engineered around the patented K18PEPTIDE™, this lightweight leave-in mask works inside the hair fiber to reconnect broken chains and restore elasticity and smoothness without rinsing. Apply to clean, towel-dried hair for a fast professional-style repair routine that fits into everyday styling and color care. The concentrated cream is formulated to improve manageability, reduce frizz, and return bounce to strands of any texture.

How does K18 repair hair so quickly?

The formula uses a biotech-designed peptide that targets the inner structure of hair rather than only coating the cuticle. By mimicking and reconnecting disrupted polypeptide chains and bonds, the treatment rebuilds strength and resilience along the hair shaft in minutes. Results compound with repeated use for longer-lasting improvement.

• Patented K18PEPTIDE™ works at molecular level to reconnect broken bonds.
• Leave-in cream penetrates fiber—no rinsing—so repair continues after application.
• Visible improvements often after 2–3 uses and noticeable after a single 4-minute treatment.

Will this work for my hair type and damage level?

K18 is formulated to be effective across curl patterns, textures, and porosity because it targets shared structural components of all hair. Whether your hair is chemically processed, heat-stressed, or naturally dry, the peptide helps rebuild inner strength while softening and reducing tangles. The treatment adapts to lightweight maintenance or more intensive repair cycles.

• Suitable for straight, wavy, curly, and coily hair textures.
• Designed for color-treated, bleached, heat-damaged, and chemically processed hair.
• Works as both a short repair course (4–6 washes) and an occasional booster.

How do I use the mask for best results?

Start with freshly shampooed, towel-dried hair and skip conditioner so the peptide can penetrate. Dispense 1–3 pumps depending on length and thickness, distribute through mid-lengths to ends, wait four minutes, and then style—do not rinse out the product. For more pronounced repair, use the mask for 4–6 consecutive washes, then maintain as needed.

• Apply to clean, damp hair; do not rinse after four minutes.
• Adjust pump amount by hair length and density (1 pump short, 3+ for long/thick).
• Use consecutively for optimal rebuilding, then space out treatments for upkeep.

What changes should I expect and when?

After the first treatment you can expect improved slip, easier detangling, and a reduction in frizz; strength and elasticity become more apparent after several uses. The product is formulated to deliver both immediate styling benefits and cumulative structural improvement so hair looks healthier and performs better under everyday styling stress.

• Immediate: softer texture, less tangling, improved manageability.
• Short term (2–3 uses): noticeable improvement in strength and bounce.
• Ongoing: sustained resilience and smoother styling results.

Who is this for: K18 Leave-In Molecular Repair Hair Mask is aimed at anyone seeking fast, scientifically driven repair—stylists and color clients, those who frequently heat-style or chemically treat hair, and anyone with dry, fragile, or frizzy strands who wants a simple leave-in step. It’s a practical choice for all textures and a good addition to routines where reduced breakage, improved manageability, and a quicker repair protocol are desired.

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.