Brushing is the act of using a tool, like a toothbrush, to clean surfaces. Most commonly, people brush their teeth to remove food particles and plaque, which helps prevent cavities and gum disease. It's important to brush at least twice a day, using a fluoride toothpaste for the best results. In addition to dental care, brushing can refer to grooming pets or applying makeup. For pets, brushing helps remove loose fur and dirt, keeping their coat healthy. When applying makeup, a brush can help blend products smoothly for a polished look. Overall, brushing is essential for cleanliness and personal care.