Use it together with hair dryer/blower. Make your hair curly without damage. Special design, it can change the wind direction and make the hair slightly in draft, doesn"t blow out the style. Universal for most hair dryers. Usage: Step 1 Wash hair, partially dry and apply a thermal spray; Step 2 Put windspin diffuser on blow dryer. Step 3 Put sections of hair in the windspin diffuser, turn on blow dryer low to moderate heat; Step 4 Move Diffuser up and down on hair section for aprox. 15 seconds then repeat on all sections of hair you want curled.