K18 Leave-in molecular repair hair mask 50ml

Perfect for regular use or ongoing repair, the full-size K18 Leave-In Molecular Repair Hair Mask delivers salon-grade results at home for damaged, colour-treated and heat-stressed hair.

Featuring the patented K18PEPTIDE™, this leave-in treatment penetrates deep into the hair’s cortex to reverse damage at its source, restoring strength and resilience where hair needs it most.

The pH-optimised formula helps keep hair proteins in their strongest state while reducing cuticle swelling, leaving hair smoother, shinier and easier to manage. With its lightweight cream texture, the mask spreads easily through all hair types without weighing strands down. Results are visible from the first use and continue to improve hair health over time.

Also available in a mini 15ml version

Key benefits

• Repairs hair damage at the molecular level
• Rebuilds strength, elasticity and softness using K18PEPTIDE™
• Improves manageability, smoothness and bounce
• Lightweight
• suitable for all hair types
• Vegan, colour-safe and cruelty-free

How to use K18 Leave-in molecular repair hair mask

1. Shampoo hair and skip conditioner
2. Towel-dry thoroughly, then apply 3–9 pumps depending on hair length and thickness, working from ends to roots
3. Leave on for 4 minutes — do not rinse. After 4 minutes, comb through and style as usual.

Do’s and Don’ts

• Do apply to clean, towel-dried hair
• Do wait the full 4 minutes before styling
• Do use for 4–6 consecutive washes after chemical services
• Don’t use conditioner before application
• Don’t over-apply — a little goes a long way
• Don’t rinse the product out