Straight creates sleek, smooth, shiny straight hair without the use of oils, resins or silicones. The lightweight formula contains aerosolized PolyfluoroEster, Living proof®'s breakthrough molecule. It creates a weightless shield, effectively preventing water from entering the hair shaft and disrupting your straight style. Straight is the only straight styler that can be used on wet and dry hair, allowing you to extend your straight style for days. Straight won't build up, repels dirt and actually helps to protect against heat styling. The result: straight hair that lasts for days.