Protect your hair from heat damage with Moroccanoil Perfect Defense. Shield your hair from the damaging effects of heat styling with a lightweight. dry aerosol spray that provides protection up to 450F/230C. Suitable for all hair types. this formula helps maintain hair's hydration while guarding against heat-induced dryness. Whether used on damp or dry hair. this heat protection spray forms an invisible barrier that supports your styling routine and leaves hair looking smooth and healthy.