Endorsed by allergy uk explore native unearthed original crystal deodorant ndash a crystal deodorant made solely from volcanic crystal minerals and nothing else therersquos nothing quite like it how do crystal deodorants prevent odour by leaving an invisible layer of natural minerals on your underarms which works around the clock to prevent the build up of odour causing bacteria better still whilst preventing odour these natural deodorants donrsquot clog pores like the nor