Aero Dry Shampoo is a waterless cleanser that refreshes the hair and scalp. What it does: Use this product on dry hair to absorb oil and boost volume and it instantly revives hair giving you fuller more voluminous hair that has body and movement. What else you need to know: Aero Dry Shampoo blends effortlessly with your natural color and will not leave any residue in the hair. Hold can 6-8 inches away from head and spray onto scalp focusing on roots. Leave on for two minutes and brush out excess product.