K18 Molecular Hair Oil: Strengthening, smoothing hair oil works on two levels of the hair fiber to fight frizz. The k18peptide works to address deeper-level damage that causes frizz repairing and strengthening damage at the innermost layer of hair to reverse damage that leads to frizz. On the surface of hair, natural oils like avocado and sunflower oil, and hemisqualane and squalane nourish while smoothing frizz + flyaways to improve color vibrancy, enhance shine, and provide 450°f (232°c) heat protection. Clinically proven to repair damaged hair, 24-hr frizz control, 104% increase in shine,78% reduction in split ends,450°f (232°c) heat protection.