Boost your hairs natural volume with the schwarzkopf professional osis big blast volumising gel the perfect accompaniment to those who lack density in their hair the schwarzkopf professional osis big blast volumising gel boosts and maximises limp lack lustre hair types with its innovative blend of volumising agents formulated to provide your hair with an voluptuous root lift that lasts all day this lightweight spritz protects your style with blow dry heat protection work into damp