Rahua - Voluminous Dry Shampoo - Refreshing for all Hair Types This 100% natural Voluminous Dry Shampoo adds volume, cleans and styles hair - all without water! The gluten-free, vegan formula is made with organic ingredients and state of the art natural dry shampoo technology. It is aerosol-free in a recyclable, eco-squeeze dispenser. Age-old plant based and mineral ingredients work together to absorb oil, sweat and dirt that accumulate throughout the day, leaving hair voluminous and refreshed, with a light, clean scent.