Open and clogged pores are common skin problems that show your skin needs care. When pores fill with oil, dirt, or dead skin, they look bigger and blocked. This causes blackheads, whiteheads, or pimples. Signs include rough skin, dullness, and frequent breakouts. The main causes are oily skin, hormones, heavy products, and poor cleansing. A simple routine with non-comedogenic products helps keep pores clean and skin clear.