A four-minute leave-in treatment that rebuilds hair from the inside out. K18's patented biomimetic peptide slips into the keratin structure and reconnects the bonds broken by bleach, color, chemical services and heat — so strength, softness and bounce come back for real, not just until the next wash.
Why it works
The damage you can see (frizz, breakage, straw-like ends) starts at the molecular level, where keratin chains have been snapped apart. Most treatments coat the outside of the strand and wash away. K18PEPTIDE™ is small enough to reach the cortex, where it reconnects both polypeptide chains — and with them the disulfide bonds — restoring core strength along the full length and width of each hair.
Key benefits
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Reverses damage in 4 minutes — no rinsing, no wrapping, no waiting under a towel
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Results that last — repair stays put through your next wash instead of rinsing down the drain
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Works on every hair type — fine, thick, straight, curly, coily, gray, virgin or bleached
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Progressive improvement — most people notice a difference by the second or third use
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pH-optimized (5.0–6.0) to keep the cuticle calm and proteins in their strongest state
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Vegan, color-safe, cruelty-free — won't strip or shift your tone
Who it's for
Anyone whose hair has been through bleach or lightening, frequent coloring, keratin or relaxing services, or daily heat styling. Especially worth it after a salon appointment — use it for the next 4–6 washes to lock in the repair.
How to use
- Shampoo. Skip conditioner — it leaves a film that blocks the peptide.
- Towel-dry thoroughly. Damp, not dripping.
- Apply 1–3 pumps depending on length and density, starting at the ends and working up.
- Wait 4 minutes. Don't rinse, don't comb.
- Style as usual. Add any products you like after the four minutes are up.
Use for 4–6 consecutive washes, then as needed. Less is more — overapplying won't speed anything up.
Good to know
- 50 ml (full size) — roughly 50–100 applications depending on hair length
- Don't rinse out; it stays in
- If you use a lot of styling products, clarify first so the peptide can get through
- Can be layered with conditioner or leave-ins after the 4-minute mark
Ingredients: Water (Aqua), Alcohol Denat., Propylene Glycol, Cetearyl Alcohol, Dicaprylyl Ether, Cetyl Esters, Behentrimonium Chloride, Polysorbate 20, sh-Oligopeptide-78, Hydrolyzed Wheat Protein, Hydrolyzed Wheat Starch, Isopropyl Alcohol, Tocopherol, Phenoxyethanol, Potassium Sorbate, Citric Acid, Fragrance (Parfum), Geraniol, Linalool, Hexyl Cinnamal, Benzyl Alcohol, Amyl Salicylate, Benzaldehyde.
