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Ingredient dossier · No. 023

Aluminum (in Deodorant)

Also: aluminum salts · aluminum zirconium · alum · aluminum chloride · potassium alum


Use cautionno strong link to cancer or testosterone; aluminum-free deodorants are an easy switch if you're concerned.


01 · Hormonal impact

Testosterone & hormonal load

Evidence
WeakIn vitro only or single study

Aluminum in antiperspirants works by temporarily blocking sweat ducts. While some researchers have proposed a link to breast cancer based on aluminum's ability to weakly mimic estrogen at receptors, large epidemiological studies have not confirmed this association. The NCI and FDA do not consider evidence strong enough to restrict aluminum in antiperspirants. Testosterone-specific effects are not established. Aluminum-free deodorant alternatives are effective and eliminate any potential concern.


02 · Where it appears

Found in.

01Antiperspirant deodorant
02Clinical-strength antiperspirant

03 · The regulators

Two jurisdictions, two different verdicts.

European Union

Aluminum compounds in cosmetics under review. SCCS opinions have noted data gaps but not concluded harm.

United States · FDA

Approved as OTC drug ingredient in antiperspirants under 21 CFR 350. Considered safe and effective at approved concentrations.


04 · Sources

The receipts.

  1. [01]
  2. [02]
    NCI — Antiperspirants and Cancer: Questions and Answers
    www.cancer.gov/about-cancer/causes-prevention/risk/myths/antiperspirants-fact-sheet
  3. [03]
    FDA — OTC Monograph M019: Antiperspirant Drug Products
    www.accessdata.fda.gov/scripts/cder/omuf/index.cfm?OTC=M019&event=monograph

05 · Related dossiers
01Aluminum ChlorohydrateC · 48
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