A professional leave-in hair mask that repairs damage in just 4 minutes. Powered by K18Peptide™, it works at the molecular level to reconnect broken keratin chains, helping restore strength, softness, and shine for all hair types.

K18 Leave-In Molecular Repair Hair Mask is an advanced hair treatment designed to repair damage from the inside out. The formula uses the patented K18Peptide™, a biotech-developed peptide that mimics the natural structure of keratin to reconnect broken polypeptide chains caused by bleaching, coloring, chemical services, and heat styling.

Unlike traditional masks that only coat the hair surface, this treatment works deep inside the hair structure to restore strength, elasticity, and smoothness. It helps reduce breakage, improve hair texture, and enhance shine and manageability.

The lightweight cream formula absorbs quickly and requires no rinsing, delivering visible improvements from the first use while continuing to repair hair with consistent use. It is suitable for all hair types, including color-treated and chemically processed hair.

Shampoo hair and skip conditioner. Towel-dry thoroughly until hair is damp. Apply 1–3 pumps depending on hair length and thickness. Distribute evenly from ends toward the roots. Leave on for 4 minutes to activate. Do not rinse; style hair as usual. Use for 4–6 consecutive washes for best repair results, then as needed