What is the main traditional use of face powder?

Face powder's primary traditional use is to set the foundation. After applying a liquid or cream foundation, face powder is typically used to absorb excess moisture and oil, providing a more matte finish and enhancing the longevity of the makeup. It helps to lock in the foundation in place, ensuring that the makeup doesn't slide off or fade throughout the day. This application not only creates a smooth, finished appearance but also diminishes shine and gives a polished look.

The other uses, while relevant to makeup application, do not reflect the primary purpose of face powder. Hiding blemishes, highlighting specific areas, or covering creases might be achieved through different products such as concealers or highlighters. However, these are secondary functions compared to the foundational role of a face powder in securing the foundation and creating a cohesive makeup look.