K18 Molecular Repair Hair Oil 30ml is the cult biomimetic haircare brand's lightweight, leave-in oil — formulated to repair damage at the molecular level while smoothing frizz and adding shine on the surface. Its hero is the patented K18PEPTIDE™ (sh-Oligopeptide-78), which targets the innermost layer of the hair fibre, paired with avocado oil, sunflower oil and squalane to nourish and seal the cuticle.
About K18
K18 is a US-based biomimetic haircare brand that launched its breakthrough K18PEPTIDE™ technology in 2020, quickly becoming one of the most influential professional haircare brands of the 2020s. The brand is built around the science of "molecular repair" — patented peptides that bond to the hair's keratin structure to support strength and elasticity, especially in chemically processed and mechanically damaged hair.
Key ingredients
- K18PEPTIDE™ (sh-Oligopeptide-78): the brand's patented bioactive peptide, designed to address deeper-level damage that causes frizz
- Avocado (Persea gratissima) oil: rich in fatty acids; nourishes and softens hair
- Sunflower (Helianthus annuus) seed oil: conditioning emollient that smooths the cuticle
- Hemisqualane & squalane: ultra-lightweight oils that lock in moisture without weighing the hair down
- Vitamin E (tocopherol): antioxidant skin-and-hair conditioner
Key benefits
- Repairs and strengthens damage at the innermost layer of the hair fibre with continued use
- Smooths frizz, flyaways and roughness on the surface
- Adds shine without weighing the hair down
- Lightweight enough for daily use across all hair types
- Vegan and cruelty-free
Who it's for
Best for damaged, chemically processed (colour, lightening, chemical relaxer), heat-styled or naturally dry hair that needs both surface smoothing and structural repair. Lightweight enough for fine hair, nourishing enough for thick, coarse or curly hair, and a useful daily styling oil for everyone in between. A natural pairing with the K18 Leave-In Molecular Repair Hair Mask for a complete biomimetic routine.
How to use
- Use on clean, towel-dried or dry hair, before or after styling.
- Dispense 1–3 drops into the palms (more for thicker or longer hair).
- Rub the palms together to warm the oil and distribute it evenly through mid-lengths and ends.
- Comb through with fingers or a wide-tooth comb for even distribution.
- Style as usual; the oil also works beautifully as a finishing oil over a finished blow-dry or curl set.
Specifications
- Size: 30ml
- Format: Lightweight leave-in repairing hair oil
- Hair type: All hair types, particularly damaged or chemically processed
- Brand: K18 (Biomimetic Hairscience)
- Vegan and cruelty-free
Related Products
