The first step in your frizz-fighting routine, clinicallyproven instant + long-lasting frizz protection to lock inmoisture + block out humidity. For medium-thick/coarse, wavyto coily hair types prone to frizz. Low pH formula seals the cuticle+ smoothing complex creates anumbrella effect for stronger frizzcontrol. Lowers the pH for smoother cuticles. helps to form a barrier that seals + smooths the hair cuticle, creating an umbrella-like effect to reduce frizz. Helps to tame frizz + improve manageability. Helps extend style by combatinghumidity + smoothing