Osma natural deodorant made from pure alum stone. Developed for the perfume and wine industry workers who needed to keep their nostrils free from artificial or man made odours, these alum blocs are naturally anti-bacterial and scent free. Simply apply to clean, wet underarms and then scent with your favourite cologne (we can help you with that choice too).Simple, effective and natural.Comes in a plastic case to keep the stone safe and dry.