Which ingredient is primarily used in face powder?

The primary ingredient commonly used in face powder is talc. Talc is a mineral that is known for its ability to absorb moisture and provide a smooth finish when applied to the skin. It helps in minimizing shine and can contribute to a velvety texture, making it a popular choice in cosmetic formulations, especially for powders designed to set makeup or control oiliness.

Talc's fine particle size aids in blending effortlessly into the skin, ensuring a natural appearance without causing heavy buildup. Additionally, it is often used because it is relatively inert and non-comedogenic, meaning it is less likely to clog pores, which is an important consideration for formulations meant for everyday wear.

While options like rice flour, cornstarch, and kaolin each have their merits in cosmetic applications—such as absorbency and texture—they are less commonly found as primary ingredients in face powders compared to talc. Rice flour and cornstarch can also be used for their absorbent properties, but they don’t offer the same smooth finish and feel as talc. Kaolin serves as a mild clay that can be beneficial in some formulations but is typically used less frequently in powder products designed for the face.