One of the unintended consequences of color processing is frizz. Color chemicals can make your hair more porous by degrading the tight outer cuticle layer. Dreaded moisture gets in - hair frizzes out! COLOR WOW borrows from textile technology covering each hair strand with an invisible waterproofing cloak: heat-activated polymer works to compress, tighten and seal hair strands hair is supernaturally sleek, smooth and super silky effects last up to 3 days, even through shampooing Unlike typical "humidity-guard" serums, will not build up, weigh hair down or make it greasy USAGE After shampooing and conditioning, apply COLOR WOW to damp, towel-dried hair. Spray liberally and evenly on hair, section by section, and then blow-dry. COLOR WOW's humidity proofing formula is heat activated. Humidity-proofing will last up to 72 hours or 2 to 3 shampoos. Reapply after 2 to 3 shampoos.If desired, Color Wow Cocktail can be applied before COLOR WOW application. For best results, do not apply wet styles to hair during COLOR WOW application as the styling polymers may interfere with COLOR WOW's technology. If desired apply additional styling products to dry hair. On days in-between COLOR WOW applications (after shampooing) styling products can be used on wet hair.