K18 Biomimetic Hairscience Molecular Repair Hair Oil
by K18 · hair_care
Editor's Take
Patented peptide repair in a silicone-free oil base, backed by volatile alkanes for shine; the fragrance allergen load is the only real compromise.
Four-pillar formula scores
- Efficacy: 8.1 / 10
- Modern Tech: 9.0 / 10
- Clean Beauty: 8.3 / 10
- Sustainability: 7.3 / 10
The Verdict
This is a cutting-edge treatment oil that pairs molecular repair with modern cosmetic chemistry. The sh-Oligopeptide-78 peptide addresses polypeptide bond damage at a structural level, while the volatile alkane system delivers immediate shine and slip without silicones. Squalane and avocado oil anchor the formula with weightless nourishment, and the bio-based delivery formula is notably sophisticated for the category. The fragrance allergen load is the trade-off: five disclosed allergens plus undisclosed fragrance components make this less suitable for sensitive scalps, but the core formula delivers on both repair and performance.
Full INCI list
Caprylyl Caprylate/Caprate, Squalane, Persea Gratissima (Avocado) Oil, Helianthus Annuus (Sunflower) Oil, C13-15 Alkane, Undecane, Benzyl Alcohol, Tridecane, Castor Isostearate Succinate, Propanediol, sh-Oligopeptide-78, Fragrance (Parfum), Tocopherol, Cinnamal, Hexyl Cinnamal, Limonene, Linalool