Astringents: The Key to Effective Antiperspirants

What are some safe and effective astringents used in antiperspirants?

Choose the correct formula:

A. Al2(SO4)3

B. Al(C2H3O2)3

Solution:

The chemical formula for aluminum with sulfate ion is Al2(SO4)3, while the formula for aluminum with acetate ion is Al(C2H3O2)3.

Antiperspirants are key products in personal hygiene routines, helping to control sweat and body odor. Astringents play a crucial role in the effectiveness of these products by causing proteins in body fluids to coagulate, reducing sweat production.

The two safe and effective astringents commonly used in antiperspirants are aluminum compounds with sulfate ion (Al2(SO4)3) and acetate ion (Al(C2H3O2)3). These ionic compounds form when aluminum ions bond with sulfate or acetate ions, resulting in powerful astringent properties.