Living Proof Full Dry Volume Blast is a volume and texture spray that contains patent-pending expandable, textured aero-spheres called ETAS. They re lighter and bigger than industry standard ingredients, so they deliver big volume and texture on your hair without weighing it down or creating a sticky after-feel. Shake to activate the formula. The ETAS are so lightweight, they float in the can so it s important to shake before each spray. Then, apply on dry hair from root to ends for all-over volume and texture, or just at the root if that s where you need a lift.