Shake well before use. Apply the mousse directly to the roots of damp hair with the applicator and then massage over the scalp. Then blow dry the hair or let it air dry for long-lasting volume. For extra volume, apply the mousse with the applicator directly to the roots of damp hair, then massage over the scalp and knead through the length of the hair. Blow-dry the hair with a large, round brush or scrunch the hair at the roots while blow-drying for a voluminous and casual look.