Sexy Hair Hot 450° Heat Protection Blow Dry Primer Prep Me 5.1 Ounce Hot Sexy Prep Me Heat Protection Blow Dry Primer is a weightless primer that provides up to 68% reduction in breakage when applied prior to blow-drying. It is formulated with Amphomer, a special ingredient that provides heat protection up to 450°F. It leaves no product feel and can be layered with other products.