98% Humidity Defying Straightening Cream. Superstar thermosetting polymers power this high performance hot iron cream. For 48 hour serious, serious straight, even in 98% humidity. Long-lasting straight, smooth, tamed hair with improved manageability, frizz control and enhanced texture. 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.