Is potassium alum in deodorant safe? Author: oldernotwiser Published: 0 comments Learn what is really real, in an industry full of fake › Forums › Ask the Beauty Brains › Is potassium alum in deodorant safe? Tagged: carcinogen, deodorant, estrogen This topic is empty. Viewing 1 post (of 1 total) Author Posts October 30, 2017 at 12:58 am #92842 oldernotwiserMember Is it a potential carcinogen? Does it mess with estrogen? Author Posts Viewing 1 post (of 1 total) The forum ‘Ask the Beauty Brains’ is closed to new topics and replies.