My good friend told me not to use deodorant or anti-perspiration due to chemicals. She said she used rubbing alcohol. Some use vinegar and wait for the vinegar odor to dissipate and some corn starch dusting too. I have not tried it.
You might consider using Milk of Magnesia, some people have had excellent results with this. What you do is take a small volume of this and let it evaporate, then apply it to the underam area.
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