a glossy, lightweight serum that shields against damage caused by heat styling. who it's for perfect for all hair types, especially those in need of heat protection and moisture. why it's special if you're going to bring the heat, be sure to use protection. this hair serum is an absolute must-have for combatting the damaging effects of heat tools and blow drying up to 450 degrees. just a few drops helps to prevent against moisture loss, banishes frizz, and adds healthy-looking shine. two ways to use protection: 1. prior to heat styling, apply 1-3 pumps to damp or dry hair. 2. to finish a style and lock in moisture, apply 1-2 pumps throughout dry hair, focusing on the ends.