I seem to react to most deodorants, be it in spray, roll on or stick form. I break out in a rash which means I cannot use deodorant for a few days and have to use hydrocortisone 1% to get rid of the rash. Is there anything that immediately comes to mind that I could be reacting to? I react to sensitive deodorants as well. It makes changing deodorants very difficult. It has become necessary to change my deodorant as once again the company manufacturing the one that I can use has decided to stop that particular one. So far I react to every other deodorant by the same manufacturer.
You should avoid using a deodarant directly to your under arm skin, avoid shaving or waxing the area for some time. These could be the cause of your symptoms.