Aluminum is a chemical element derived from metal often used in deodorant formulas for its sweat-reducing benefits. Formulas contain aluminum
salts that dissolve into sweat glands in the underarm and prevent sweating. Aluminum also works to control odor-producing bacteria. However,
dermatologists say that aluminum can be the culprit of various problems including underarm irritations, eczema and psoriasis flare ups, and even certain cancers.