Small skin openings, also known as PORES, are tiny openings in the skin that allow sweat and other secretions to escape. They are typically found on the face, neck, and back, and are usually no larger than a few millimeters in diameter. PORES are an important part of the body's natural cooling system, as they help regulate body temperature. They also play a role in the production of sebum, which helps keep the skin moisturized.