DARN STRAIGHTâ„¢ is a conditioning straightening lotion that provides temporary smoothing and extra protection from heat by infusing nourishing vitamins and antioxidants into the hair cuticle. Ideal for fine/medium hair Directions for use: Apply to damp hair and comb through. Blow dry with a large round or paddle brush to combat curls and frizz while protecting against heat-styling damage.