Want a vintage look for your upcoming session? The answer is Pin Curls! Pre-curl hair and set with bobby pins or clips. leave them in your hair for about 7-8 hours, or preferably overnight, in order to let them set perfectly and create lasting curls. Carefully remove the bobby pins from your hair and comb your finger gently through your hair to style them and set them into place. Then Spray, Spray and Spray some more. *Tip: the more you use your fingers the more it breaks the curls up.