Aluminum toxicity is a controversial topic. The science community resorts to non-answers like politicians. They never give a definitive answer on the ill effects. One group says it causes cancer, autism, Alzheimer's etc and the other group says there isn't enough evidence! For the consumer, this could be very confusing.
Aluminum is present in everything you use every day. It's a long list that includes water, coffee maker, cookware, medications, antiperspirant deodorants, etc. You can avoid exposure if you live like a hermit but that's impractical. If you want to minimize exposure, make small lifestyle changes, starting with your antiperspirant deodorant.
Aluminum is neither an antibacterial agent nor is it a deodorizer. In commercial antiperspirant deodorants, aluminum salts are used as a plug to prevent sweating. Sweating is a very important bodily function. It helps cool down the body and obstructing it is unhealthy. Aluminum being safe or unsafe is irrelevant when it comes to making an effective deodorant. The purpose of a good deodorant is to stop body odour. We don't use aluminum salts in Super Deodorant because we can stop body odour without preventing perspiration.
Super Deodorant is a safe alternative as it does the job without side effects. The active ingredients in Super Deodorant prevent the growth of body odour causing bacteria without changing the pH of your skin. By doing so, Super Deodorant stops body odour more efficiently than any aluminum-based antiperspirant deodorant. Switch to Super Deodorant not because you want to avoid aluminum. Switch because you want a better solution. Don't fall prey to baseless fearmongering.