Dermal Therapy Crystal Deodorant is a 100% natural deodorant that provides an invisible protective barrier, which prevents the growth of odour-causing bacteria while allowing your skin to breathe. Dermal Therapy Crystal Deodorant is hypo-allergenic and ideal for sensitive skin. Alcohol free. Moisten the top of the stone with water and apply under arms, on your feet and areas affected by body odour and perspiration. Ingredients: Crystallised Alum