Stop everything, you need this in your life! Clinical testing confirms: this heat-activated spray protects against frizz-inducing humidity for over 24 hours. Benefits:Polyquaternum-59 – a cationic polymer that smooths the cuticle and provides UV protection. Hydrolyzed Keratin - broken down to penetrate porous, damaged hair cuticles, it repairs and restores moisture, elasticity, luster and smoothness. Free of sulfates. cruelty-free. Safe for color-treated, Brazilian-treated and keratin-treated hair.