Simply Smooth xtend between dry shampoo rids hair of environmental impurities while deodorizing and cleansing sebum from hair. May be used to refresh hair between water based shampoos. Rids hair of environmental impurities and oil (sebum). Adds body and volume. Leaves hair feeling clean – no water required. Great for active lifestyles. Spray on shampoo, fluff and brush! Sodium chloride free. Refreshes hair during curing time of a Simply Smooth keratin treatment.