Molecular Repair Hair Oil is a biotech-engineered, weightless finishing oil that strengthens and repairs damaged hair while immediately smoothing frizz and flyaways. Designed for salon and at-home use across all hair types, the highly concentrated formula works on two levels of the hair fiber — the K18PEPTIDE™ addresses deeper, structural damage while lightweight natural oils (avocado, sunflower, hemisqualane/squalane) nourish and smooth the cuticle for improved shine and color vibrancy.