Zerreau® Towel Off Festival Dry Shampoo is used by festival goers, campers, runners, sports fans and just about anyone who wants clean, silky hair on the go WITHOUT using water! Many festival goers use Zerreau® as an alternative to traditional dry shampoo. To use, simply apply the dry shampoo foam directly to the roots, massage to remove dirt and oil, then remove while towel drying. Dirt and grease are lifted into the lather and wiped away. This results in a much better clean than conventional dry shampoo products!