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Sun Bum: Heat Protector. Say no to heat-damaged hair. Our Heat Protector decreases blow-dry time and helps protect against thermal damage and breakage. This two-phase protective formula is lightweight, nourishing and works quickly to help eliminate frizz and resist humidity, keeping hair healthy and hydrated. Works with all heat tools such as blow dryers and flat irons. Caution: Please make sure your hair is always dry before using heat styling tools. If you use our Heat Protector on dry hair, be sure to give it a quick blow dry or let it air dry for a bit before using heat styling tools such as a curling wand or flat iron.