The lightweight leave-in treatment serum preps hair with pre-style protection from heat styling and the drying effects of the sun, while providing plant-powered frizz defense for up to 72 hours. The vegan hair-smoothing formula features a plant polymer shield and botanical smoothing oil blend to protect against humidity, keeping your sleek hair smoother for longer.<br/>To prep hair for styling, work a small amount of product in hands. Apply through damp hair. Style as desired. Your smooth infusion™ regimen Cleanse daily or as needed with smooth infusion™ anti-frizz shampoo. Condition daily or as needed with smooth infusion™ anti-frizz conditioner. To prep hair for styling, use smooth infusion™ style-prep smoother™.