For long hair
German recommends blow drying your hair upside down to get volume and lift at the roots.
Boost with: Try Pantene Pro-V Texturizing Sculpting Wax, $9.
For shorter hair
While blow-drying, use your finger tips to gently massage the scalp and lift the hair from the root towards the ceiling. This adds lift where you want it and maintains texture.
Boost with: Pantene Pro-V Volume Root Lifting Spray Gel, $6.