K18 Molecular Repair Hair Oil is a biotech-engineered oil that strengthens, repairs, reduces frizz in two hair levels, and enhances shine for all hair types. 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.