275MLThe first step in your anti-frizz routine: clinically proven, instant, and long-lasting frizz protection to lock in moisture and block humidity. For medium to thick, wavy to curly, frizz-prone hair. Its low-pH formula seals the cuticles, and its smoothing complex creates an umbrella effect for enhanced frizz control. It lowers the pH for smoother cuticles. It helps form a barrier that seals and smooths the hair cuticle, creating an umbrella effect to reduce frizz. It helps tame frizz and improve manageability. It helps prolong your style by fighting humidity and smoothing.