The TIGI Bed Head Straighten Out straightening cream will keep your hair straight even in high levels of humidity. The straightening cream can be used on all hair types - just apply to damp hair, and comb through for even distribution before blow drying and using the hot irons to seal in the straight. Ingredients include thermos-setting polymers - these work with the hot irons for long-lasting results. 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.