One of the best ways to make fine hair look fuller and thicker is to add luscious thick curls. Additionally, having a hair stylist add some layering and cut it to a length just past the shoulders helps hair look full and bouncy.
Start this hairstyle by sectioning your hair and curling the bottom section. Make sure to spray your curls with hairspray after finishing each section. After you've curled all your hair, finish off by spraying it all with holding spray. It's recommended that you use a product to protect your hair from heat damage, such as a heat styling hairspray.