Aluminum Chlorohydrate (ACH) stands as a significant group of water-soluble aluminium complexes, characterised by the general formula AlnCl(3n-m)(OH)m. With its versatile properties, ACH finds application in various over-the-counter hygiene products, particularly as an active antiperspirant agent. This compound, comprising up to 25% of some products, plays a pivotal role in managing sweat and ensuring lasting freshness.

In antiperspirant formulations, the 50% aqueous solution of ACH is strategically incorporated at specific percentages, tailored to the product type. Notably, this inclusion aims to strike a balance between effectiveness and user comfort:

• Aerosol formulations benefit from 38% ACH, equivalent to 9.5% aluminium content.
• Roll-on formulations incorporate 14.5% ACH, representing 3.61% aluminium.
• Stick formulations encompass 21% ACH, translating to 5.2% aluminium.
• The efficacy of ACH as an active antiperspirant agent stems from its interaction with skin cells at the eccrine gland sweat ducts’ surface layer. Upon application, aluminium ions penetrate these cells, inducing a subsequent influx of water. This dual process leads to cell swelling, which in turn, triggers the constriction of sweat ducts. The outcome is a notable reduction in sweat production, thereby offering effective and reliable perspiration control.

Dispelling concerns, it’s vital to emphasise that scientific evidence does not support claims linking aluminium compounds, including ACH, to cancer. Rigorous research has consistently demonstrated the safety of these compounds when used in antiperspirants. In fact, the percentage of aluminium from antiperspirants that is absorbed through the skin is incredibly low, at a mere 0.012%. This is significantly less than the amount of aluminium typically absorbed from dietary sources over a similar period.

In a broader context, the negligible absorption rate from antiperspirants underscores their safety profile. Concerns about aluminium toxicity are largely unwarranted, as the compound’s minimal absorption from topical application is reassuringly lower than what could be expected from daily dietary intake. This scientific understanding debunks myths surrounding aluminium compounds and affirms their role as reliable and safe components in personal care products.

Aluminum Chlorohydrate stands out as a tried-and-true ingredient in the realm of antiperspirants. Its presence in various formulations underscores its adaptability, while its mechanism of action highlights its effectiveness in sweat management. Crucially, scientific research provides robust evidence against claims of carcinogenicity, reaffirming its safety for topical use. Understanding the minimal absorption rate further reinforces the confidence consumers can place in these products.

This product is available at Carst & Walker in South Africa and East Africa.