A deep cleansing face brush is a skincare tool designed to help effectively cleanse the skin by removing dirt, oil, makeup, and impurities from the pores. It usually consists of a handheld device with bristles or brush heads that rotate or vibrate to provide a gentle exfoliating and cleansing action. These brushes are often used as part of a skincare routine to enhance the effectiveness of cleansers and promote healthier-looking skin.