taking in aluminum at the amount that the ionto would give out is relatively safe. To be honest, anti-perspirant/deodorant would be more dangerous cuz theres usually a high content of aluminum zirconium that CAN help develop alzheimers for some individuals. But for the most part, you should be fine, don't stress it

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PS. nickel, chromium, iron, etc can all be found naturally in the human body.
Edit: etsveteran if your getting those type of side effects, you could be allergic to something that your using along the process imo