Then, use a setting solution on the one-inch section of hair you want to curl, and then twist that hair with your finger all the way down to the ends. After the hair is twisted, wrap it around a curling iron, either medium or large sized. For best results, be sure to alternate between wrapping the one-inch sections around the curling iron both away and towards your face. Hold each hairpiece around the curling iron for about three seconds. Finally, once the hair is all curled, use your fingers to comb through the hair for that soft wavy look.