The first step in your anti-frizz routine: instant and long-lasting frizz protection, clinically proven to lock in moisture and block out humidity. For medium-thick/thick, wavy to curly, frizz-prone hair. Its low pH formula seals the cuticle and its smoothing complex creates an umbrella effect for enhanced frizz control. Lowers pH for smoother cuticles. Helps form a barrier that seals and smooths the hair cuticle, creating an umbrella effect to reduce frizz. Helps tame frizz and improve manageability. Helps extend style by fighting humidity + smoothing.