Frizz Block Smoothing SprayAlpha Keratin 60ku instantly fills and seals cracked cuticles while featherweight polymers and lipids hover above, repelling air born humidity. This lightweight, milky mist is alcohol free, so it wont create build up or dry out hair, and its heat protective up to 450 degrees, leaving hair healthy, silky soft, and free of frizz for days. FYI this product does require heat to work, so no air drying!