Back to Ingredient Dictionary

AMMONIUM ALUM

Description

Ammonium alum, also known as ammonium aluminum sulfate, is a versatile and widely used compound in skincare and cosmetic formulations. This crystalline salt is composed of ammonium, aluminum, sulfur, and oxygen atoms, forming a double sulfate of aluminum and ammonium. Its astringent and antimicrobial properties make it a valuable ingredient in various skincare applications.

In skincare products, ammonium alum functions primarily as an astringent, helping to tighten pores and reduce excess oil production. This property makes it particularly useful in formulations targeting oily or acne-prone skin. Additionally, its mild antimicrobial action can help inhibit the growth of odor-causing bacteria, making it a common ingredient in natural deodorants.

Ammonium alum is also utilized in aftershave products due to its ability to constrict blood vessels, potentially reducing razor burn and minor cuts. Its water-soluble nature allows for easy incorporation into various product formulations, including lotions, gels, and sprays. While generally considered safe for topical use, some individuals may experience skin irritation, particularly those with sensitive skin or aluminum sensitivities. As with any skincare ingredient, patch testing is recommended before widespread use.

Products with this Ingredient