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K18 Leave In Molecular Repair Mask 15ml

Ideal For

bleached hair coloured damaged K18 Prevent Breakage
K18

K18 Leave In Molecular Repair Mask 15ml

$52.95
A leave-in hair treatment to reverse chemical and physical damage to hair. We tend to put our hair through a lot, which is where the K18 Leave-In Molecular Repair Mask comes into play. This no-rinse hair treatment, made with a patented bioactive peptide, promises to reverse damage caused by colouring, heat and st...
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The 15ml bottle of K18's leave-in molecular repair treatment — the same formula as the full size in a smaller format. A four-minute, no-rinse step that replaces conditioner after washing, made for hair bleached, coloured or heat-styled to the point where it feels porous and rough.

The actives

  • K18PEPTIDE (sh-oligopeptide-78) — a patented bioactive peptide, formulated to act on the keratin chains inside the strand rather than coating the outside.
  • Hydrolysed wheat protein and wheat starch — conditioning proteins that smooth the surface of the hair.
  • Cetearyl alcohol and behentrimonium chloride — the base that lets the treatment comb through evenly.

How to use it

Shampoo but do not condition, then towel-dry properly. Apply one to three pumps from the ends upwards, leave four minutes, and do not rinse. Comb through, then style as usual.

Who it's for

Anyone wanting to run the treatment protocol — four to six consecutive washes after a colour or lightening service — without buying the largest bottle, and anyone who wants it for travel. Same formula and same method as the 50ml; only the volume changes.

Shampoo hair and do not condition. Towel-dry thoroughly.
Apply 1–3 pumps depending on hair length and density, starting at the ends and working upwards.
Leave on for 4 minutes. Do not rinse.
Comb through, then apply styling products as desired.

Use for 4–6 consecutive washes after a salon service, then as needed for maintenance.

Water (Aqua) (Eau), Alcohol Denat., Propylene Glycol, Cetearyl Alcohol, Dicaprylyl Ether, Cetyl Esters, Behentrimonium Chloride, Polysorbate 20, sh-Oligopeptide-78 (K18Peptide™), Hydrolyzed Wheat Protein, Hydrolyzed Wheat Starch, Isopropyl Alcohol, Tocopherol, Phenoxyethanol, Potassium Sorbate, Citric Acid, Fragrance (Parfum), Geraniol, Linalool, Hexyl Cinnamal, Benzyl Alcohol.

The 15ml bottle of K18's leave-in molecular repair treatment — the same formula as the full size in a smaller format. A four-minute, no-rinse step that replaces conditioner after washing, made for hair bleached, coloured or heat-styled to the point where it feels porous and rough.

The actives

  • K18PEPTIDE (sh-oligopeptide-78) — a patented bioactive peptide, formulated to act on the keratin chains inside the strand rather than coating the outside.
  • Hydrolysed wheat protein and wheat starch — conditioning proteins that smooth the surface of the hair.
  • Cetearyl alcohol and behentrimonium chloride — the base that lets the treatment comb through evenly.

How to use it

Shampoo but do not condition, then towel-dry properly. Apply one to three pumps from the ends upwards, leave four minutes, and do not rinse. Comb through, then style as usual.

Who it's for

Anyone wanting to run the treatment protocol — four to six consecutive washes after a colour or lightening service — without buying the largest bottle, and anyone who wants it for travel. Same formula and same method as the 50ml; only the volume changes.

Shampoo hair and do not condition. Towel-dry thoroughly.
Apply 1–3 pumps depending on hair length and density, starting at the ends and working upwards.
Leave on for 4 minutes. Do not rinse.
Comb through, then apply styling products as desired.

Use for 4–6 consecutive washes after a salon service, then as needed for maintenance.

Water (Aqua) (Eau), Alcohol Denat., Propylene Glycol, Cetearyl Alcohol, Dicaprylyl Ether, Cetyl Esters, Behentrimonium Chloride, Polysorbate 20, sh-Oligopeptide-78 (K18Peptide™), Hydrolyzed Wheat Protein, Hydrolyzed Wheat Starch, Isopropyl Alcohol, Tocopherol, Phenoxyethanol, Potassium Sorbate, Citric Acid, Fragrance (Parfum), Geraniol, Linalool, Hexyl Cinnamal, Benzyl Alcohol.

Frequently Asked Questions

Q. How does K18 Leave-In Molecular Repair Mask repair damaged hair?

A. K18 is powered by a patented peptide (K18PEPTIDE™) that works at a molecular level to reconnect broken keratin chains inside the hair. This helps restore strength, elasticity and smoothness rather than simply coating the surface, delivering deeper and longer-lasting repair.

Q. Should I skip conditioner when using the K18 repair mask?

A. Yes. For best results, apply K18 on clean, towel-dried hair after shampooing and before any conditioner. Conditioner can leave a film on the hair that may inhibit the K18PEPTIDE™ from penetrating the hair shaft and working at a molecular level, so it’s recommended to use the mask first and then style or condition if desired afterwards.

Q. Do I need to rinse out K18 after applying it?

A. No. K18 is a leave-in treatment. After applying to towel-dried hair, allow it to sit for 4 minutes to activate. Do not rinse. You can then layer styling products on top and style as usual.

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