Aluminum in Antiperspirants

The most significant concern regarding aluminum in hygiene products is its use in antiperspirants.^[1] Aluminum compounds, such as aluminum chloride and aluminum zirconium, are used in these products to block sweat glands, reducing perspiration.^[2] However, this method of action has a worrisome side effect: it means aluminum is applied directly to the skin, particularly under the arms, an area near the breasts.^[3] Studies have raised alarms about this proximity, suggesting a link between long-term aluminum exposure and breast cancer.^[4]

Research shows that aluminum can be absorbed into the skin and has been detected in breast tissue.^[5] Scientists believe that aluminum can act as an endocrine disruptor, interfering with estrogen receptors in breast tissue.^[6] Estrogen plays a key role in the development of some breast cancers, and the presence of aluminum in breast tissue has raised concerns that it may contribute to cancerous growths.^[7]

Other Hygiene and Cosmetic Products Containing Aluminum

Antiperspirants aren’t the only products containing aluminum.^[8] Many other everyday hygiene and beauty products also include this metal in various forms, contributing to cumulative exposure.^[9]

• Sunscreens: Certain sunscreens contain aluminum hydroxide as a stabilizing agent.^[10] Although its use is approved by health regulatory bodies, the potential for skin absorption, particularly when applied in large quantities and exposed to heat, is concerning.^[11]
• Toothpaste: Aluminum compounds can be found in some types of toothpaste as abrasives or whitening agents.^[12] This frequent, direct contact with the sensitive tissues of the mouth could pose risks, especially over extended use.^[13]
• Lipsticks and Lip Balms: Aluminum may be used as a pigment in lipsticks and balms.^[14] The repeated application of these products, particularly on mucous membranes like the lips, increases the likelihood of ingestion and absorption of aluminum.^[15]
• Body Lotions and Makeup: Aluminum is also found in some moisturizers, foundations, and powders, where it serves as a thickening agent or pigment.^[16] Given the extensive use of these products on large areas of the skin, the potential for aluminum absorption is significant.^[17]

The Daily Aluminum Exposure Concern

The most alarming aspect of aluminum in hygiene and cosmetic products is not the presence of it in a single product, but the cumulative exposure we face.^[18] From deodorants to sunscreens and body lotions, we rub aluminum-containing products into our skin daily, often multiple times a day.^[19] The skin, though an effective barrier, still absorbs substances applied to it—especially with long-term, continuous exposure.^[20]

Even though the quantities of aluminum in individual products may be considered “safe” by regulatory standards, the issue lies in the cumulative effect.^[21] We are exposing ourselves to higher levels of aluminum than previously thought, and for longer durations than ever before.^[22]