10. PHILIP KINGSLEY ELASTICIZER
Created for Audrey Hepburn (which tells you everything), Elasticizer is the pre-shampoo treatment that brings hair back from the brink. Applied before shampooing, it drenches the lengths in moisture and helps reduce breakage, frizz, and dryness, especially during winter. Leave it on while you scroll, clean, or bed rot, then rinse for bouncier, healthier lengths. A hair icon.