K18 Leave-In Molecular Repair Hair Mask is a leave-in treatment mask that works on the molecular level to reverse hair damage in just 4 minutes. The patented K18PEPTIDE™ (sh-Oligopeptide-78) is clinically proven to repair damage from bleach and color, chemical services and heat, making it suited to all hair types — from bleached, color-treated and heat-damaged hair to curly, coily, fine and thick textures. Results are immediate and lasting: restored strength, softness, smoothness and bounce.
Key Benefits
- Reverses hair damage on the molecular level in 4 minutes — no rinsing required
- K18PEPTIDE™ is clinically proven to repair damage from bleach and color, chemical services and heat
- Reconnects broken polypeptide chains and disulfide bonds to rebuild strength from within
- Restores strength, softness, smoothness and bounce with immediate and lasting results
- pH-optimized (5.0–6.0) and color-safe, so it will not strip or shift color
- Vegan and cruelty-free; works on all hair types and textures
Key Ingredients
- K18PEPTIDE™ (sh-Oligopeptide-78) — a biotech peptide that mimics hair's own structure and reconnects broken keratin chains
- Hydrolyzed Wheat Protein and Hydrolyzed Wheat Starch — help strengthen the hair fiber
- Cetearyl Alcohol and Cetyl Esters — condition and emulsify for an even, weightless spread
- Alcohol Denat. — opens the cuticle so the peptide can penetrate to the hair's core
- Tocopherol (Vitamin E) — antioxidant protection
How to Use
- Shampoo and skip conditioner, then towel-dry hair thoroughly.
- Apply 1–3 pumps from ends toward roots, adjusting for length and density.
- Wait the full 4 minutes — do not rinse out.
- Comb through, then style and layer other products as usual.
- Use on 4–6 consecutive washes, then as needed.
FAQ
Do you rinse out K18 Leave-In Molecular Repair Hair Mask?
No. It is a leave-in mask — apply it to towel-dried hair, wait 4 minutes, and leave it in. Style as usual afterward.
What hair type is the K18 hair mask for?
All hair types and textures. Because it repairs at the molecular level, it works on bleached, color-treated, chemically treated and heat-damaged hair as well as curly, coily, fine and thick hair.
How often should I use the K18 Leave-In Molecular Repair Hair Mask?
Use it on 4–6 consecutive washes to complete the initial repair cycle, then use it as needed to maintain results.
Available in one size: 1.7 oz/50 mL.
