K18 Leave-In Molecular Repair Hair Mask - 100ml

Repair and revive damaged hair with the K18 Leave-In Molecular Repair Mask, a science-backed treat...

Best current price£120.00from Cult Beauty UK

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K18 Jumbo Leave-In Molecular Repair Hair Mask 100ml

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Cult Beauty UKK18 Jumbo Leave-In Molecular Repair Hair Mask 100ml

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Product Information

Full details

The K18 Leave-In Molecular Repair Hair Mask is an ideal solution for individuals with hair damaged by bleaching, chemical services, heat styling, or environmental stressors who want to restore strength and elasticity. By utilizing patented peptide technology, this treatment goes beyond surface-level conditioning to repair broken keratin chains from the inside out, though users must be patient and avoid using heavy conditioning products immediately before application for maximum effectiveness.

All features

Model Part Number	K18-31008
Brand	K18 Biomimetic Hairscience

Extended Product Information

FAQs

Do I need to rinse the K18 mask out?

No, this is a leave-in treatment. Once applied, you let it sit for four minutes and then proceed with your usual styling routine.

Can I use K18 with other products?

Yes, but apply it first on clean, damp hair. Wait four minutes before adding any other styling products or heat protectants.

How often should I use it?

Use it for the first 4-6 washes consecutively, then switch to a maintenance schedule of using it every 3-4 washes.

Is it safe for color-treated hair?

Absolutely. It is specifically designed to repair damage caused by coloring and bleaching services.

Can I use conditioner before applying K18?

It is not recommended. Conditioner can coat the hair and prevent the peptides from penetrating deep into the cortex.

Troubleshooting

Hair feels slightly tacky or stiff

You likely used too much product. Start with a pea-sized amount and work up to more only if your hair length requires it.

Not seeing immediate results

The K18 technology works progressively. Use the product for 4-6 consecutive washes to fully restore the keratin structure.

Hair feels dry after application

Since K18 is a repair treatment, not a cosmetic moisturizer, feel free to apply a light detangler or oil after the 4-minute activation period.

Pros and Cons

Pros

Significantly reverses damage from bleach and chemicals
Lightweight, leave-in formula that does not weigh hair down
Quick four-minute application process
Improves overall hair elasticity, softness, and bounce
Vegan and cruelty-free formulation

Cons

Requires avoiding conditioner immediately before use
Higher price point compared to traditional hair masks
Results are cumulative and may take several uses to see full potential

Setup, Compatibility & Care

Preparation: Cleanse your hair with a clarifying shampoo if you have significant product buildup, as this allows the K18Peptide to penetrate effectively.
Application: Apply on damp hair that has been towel-dried. Do not apply conditioner or leave-in sprays before the K18 mask.
Waiting: Leave the mask in for exactly four minutes before combing or styling.
Styling: After the four-minute window, you may apply your usual heat protectants or styling creams as needed.
Care: Store the bottle in a cool, dry place away from direct sunlight to maintain the integrity of the peptides.