K18 Leave-In Molecular Repair Hair Mask is a breakthrough, patented bioactive peptide treatment that works on a molecular level to reverse hair damage caused by bleaching, coloring, heat styling, and chemical treatments. Clinically proven to restore 91% of hair strength and 94% of elasticity, this leave-in mask delivers salon-quality results in just 4 minutes.

Formulated with K18Peptide™, this vegan and cruelty-free mask repairs damaged keratin chains deep within the hair fiber—without rinsing or weighing hair down. Ideal for all hair types, including color-treated and chemically processed hair.

Key Benefits:

Clinically Proven Repair: Restores hair strength, elasticity, and bounce in just 4 minutes
Targets All Damage Types: Reverses effects of bleach, dye, heat, chemical, and mechanical styling
Leave-In Formula: No rinse required; provides lasting results even after washing
Lightweight Moisture: Softens, detangles, and smooths without buildup
Long-Lasting Results: Stays effective between washes
Color Safe, Vegan & Cruelty-Free
pH-balanced (5.0–6.0) to support healthy hair structure

Usage Instructions:

Shampoo only (skip conditioner) and towel dry hair thoroughly.
Start with 1 pump, applying more as needed depending on hair length and thickness.
Work evenly from ends to roots.
Wait 4 minutes to activate.
Do not rinse. Style as usual.

K18 Hair Mask Dos & Don’ts:

✅ Use a clarifying shampoo if you use heavy styling or dry shampoo
✅ Ensure hair is thoroughly towel-dried before application
✅ Wait the full 4 minutes before applying any other products
✅ Use for 4–6 consecutive washes, then every 3–4 shampoos for maintenance

❌ Don’t use conditioner before applying
❌ Don’t rinse the mask out
❌ Don’t overapply, it’s highly concentrated

Product Type

Skin Concerns

Active Ingredients

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K18 Leave-in Molecular Repair Hair Mask

2 sizes, 2 sizes