A blush brush is a makeup tool specifically designed for applying blush to the cheeks. It typically has soft, fluffy bristles that help distribute the product evenly, creating a natural-looking flush. The shape of the brush can vary, but it is often slightly angled or rounded to fit the contours of the face. Using a blush brush allows for better control over the amount of product applied, making it easier to achieve the desired intensity. It is commonly used with various types of blush, including powder, cream, and liquid formulations, enhancing the overall makeup look while complementing other products like foundation and highlighter.