Superstar thermosetting polymers power this high-performance hot iron cream. For 48 hours serious, serious straight, even in 98% humidity.IngredientsThermosetting polymers: Our new heat-powered technology works with the heat from hot irons to provide humidity-proof straight and smooth hair.Conditioning agents: Smooths the hair cuticle for super shine as added strength and elasticity.How to Use: Apply to damp hair and comb through for even distribution. Blow-dry hair until completely dry and use hot irons in small sections to seal in the straight.The TIGI straightening cream will deliver smooth, straight hair that is easy to manage and free from frizz. Even in 98% humidity, your hair will remain straight for up to 48 hours. The cream also includes conditioning agents to add strength and shine.