In my case, I believe both excessive underarm hair removal (I have to shave most days) and switching up my deodorants ...

cream contains Menthol, which quickly stops bumps and redness, while lidocaine stops pain and irritation that follows hair removal below the bikini line and armpits. [ Easy to Use ] - Recommended ...

Armpit rashes can be caused by allergic reactions ... If a product like a deodorant, antiperspirant, or shaving cream gives you a rash, you might be sensitized to one or more fragrances or ...