Deodorants: The Armpit Conversation

Conventional antiperspirants use aluminum compounds, usually aluminum chlorohydrate or aluminum zirconium tetrachlorohydrex, to physically block sweat ducts and reduce sweating. The concern that has been raised in research is whether aluminum from these products can accumulate in breast tissue over time, given that the armpit is located close to the breast and the skin there is thin.

A few studies have found aluminum deposits in breast tissue samples, and some researchers have hypothesized a potential link to breast cancer. However, major health organizations including the National Cancer Institute and the American Cancer Society have reviewed the evidence and concluded there is no conclusive proof of a causal link. The research is ongoing and not settled.

Beyond the aluminum question, most conventional deodorants also contain parabens, synthetic fragrance, propylene glycol (a penetration enhancer), and triclosan in some older formulations. Even if you are not worried about aluminum, the combination of these other ingredients applied daily to an area with thin skin and nearby lymph nodes is worth considering.

The Transition Period Is Real

There is usually a transition period of one to two weeks when switching from antiperspirant to natural deodorant. Your body has been suppressing sweat for potentially years and it takes a little time to recalibrate. During this time you might sweat and smell more than usual. It passes. Sticking with it through the transition is worth it.

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