Developed for dry, damaged or chemically processed hair, No Frizz Leave-in Conditioner promotes optimum moisture levels without oils or silicones. It also detangles and smoothes hair leaving it looking healthy and shiny while protecting against surface damage and breakage from sun exposure and heat styling. The Leave-In features PolyfluoroEster - the first new anti-frizz technology in 30 years to effectively block humidity for beautifully soft, smooth, frizz-free hair. A must-have for highly processed or colored hair.