Lather up with a clarifying shampoo to get rid of product buildup that weighs thin hair down.
Use a volumizer and blow-dry hair without using a brush. Then, take the section of hair you're pulling across your forehead and back and backcomb it, so you get a little extra lift.
Spritz the whole look twice with a shine spray-hold the bottle at least eight inches away from your head so you don't overdo it.