Bring the heat – but keep your hair safe! Blockade heat defense serum shields hair from heat styling and blow drying, protecting against damage to the delicate hair fiber. The nutrient-packed elixir forms a protective, humidity-proof layer around each hair which prevents moisture loss and ensures a frizz-free, smooth, and shiny finish. How to Use: Prior to heat styling, apply two to three pumps into the palm of your hand and evenly distribute throughout hair. Style as desired. Pro Tip: Use a small amount on dry hair to tame frizz and fly-aways. 1.7 fl.oz