Aluminum is an antiperspirant, meaning it clogs your pores. Sweat is an essential function of the human body and underarm perspiration is especially important for ridding the body of toxins. The lymph nodes are right there for a reason.
Studies also suggest that up to 10% of the aluminum in deodorant is absorbed through our skin and enters circulation, where it can clog pores throughout our body and our internal organs. Studies also suggest that aluminum based deodorants are meant to last for 72 hours. Yet most people apply a fresh layer every day. This would be like taking three pills a day when the instructions say to take one.
We need a more clear understanding of the effects of aluminum-based deodorants on our biological system.