Little House in the Suburbs: Quick Stick Deodorant: "aluminum crammed in your pores cannot be good for you, and it seems in recent years that store-bought deodorant is becoming less and less effective anyway. This deodorant uses a natural moisture absorber (cornstarch), a natural deodorizer (baking soda), and a natural anti-bacteria/fungal oil (tea tree oil) to keep any stink from developing in the first place."