Living Proof Perfect hair Day¿ Heat Styling Spray is a lightweight heat protectant spray that delivers touchable, soft smoothness that lasts up to 48 hours¿without the use of silicones. Powered by our patented Healthy Hair Molecule (OFPMA), we created a new solution for smoothness that protects from heat without weighing hair down, or making it stiff or sticky. This versatile formula can be used on damp or dry hair ¿ before blowdrying, flat-ironing or curling. Free of silicones, phthalates and parabens. Cruelty-free.