Ammonium Perfluorooctane Sulfonate

Ammonium Perfluorooctane Sulfonate (also known as Ammonium Heptadecafluorooctanesulfonate) is a synthetic fluorosurfactant with the CAS number 29081-56-9. It belongs to the class of per- and polyfluoroalkyl substances (PFAS), which are known for their ability to repel water and oil, providing stain, grease, and water repellency.

Ammonium Perfluorooctane Sulfonate is used in a variety of cosmetics and personal care products due to its surfactant and emulsifying properties. It can be found in products like shampoos, conditioners, moisturizers, and makeup products to provide a smooth application and spreadability. Its stain and water repellency properties are also harnessed in some household cleaning products, fabric protectors, and carpet cleaners.

Although there isn't a vast amount of data on its effects on human skin, like other PFAS, Ammonium Perfluorooctane Sulfonate may cause skin irritation or sensitization, particularly in individuals with sensitive skin. The potential for allergic reactions, although not well documented, could exist.

PFAS substances, including Ammonium Perfluorooctane Sulfonate, have been associated with various health issues when humans are exposed to them at high levels or over long periods. These may include liver damage, immune system effects, increased cholesterol levels, and potential developmental issues in fetuses and infants. They are also known to be persistent in the environment, leading to concerns over their long-term impact on ecological systems.

In California, as per Assembly Bill No. 496 (Chapter 441), Ammonium Perfluorooctane Sulfonate is listed as one of the banned ingredients in cosmetic products effective January 1, 2025. This legislation restricts the manufacturing, selling, and distribution of cosmetic products that intentionally contain this ingredient, among others, due to the associated health and environmental risks.

Due to its potential health and environmental risks, the use of Ammonium Perfluorooctane Sulfonate in cosmetics and household products is being restricted in places like California. Consumers, especially those with sensitive skin, are advised to check product labels and avoid products containing this ingredient or related PFAS substances