A blush brush is a makeup tool designed specifically for applying blush to the cheeks. It typically features soft, fluffy bristles that help distribute the product evenly, creating a natural-looking flush. The brush comes in various shapes and sizes, allowing users to choose one that best fits their application style. When using a blush brush, it's important to select the right type of blush, such as powder, cream, or liquid. Proper technique involves tapping off excess product and applying it in a circular motion on the apples of the cheeks, blending outward for a seamless finish.