Open pores on face are small pit-like pores that appear in people with combination or oily skin. Having open pores on your face can make your skin look dull and old. Pores also accumulate dirt and become clogged. A clogged pore leads to further complications like pimples, blackheads, and excess production of sebum. Your pores often stretch and open up due to few specific skin conditions which happen either during adolescence or due to sun exposure. This results in making your skin look rough, dull, and inflamed. Those with oily skin complexion are more prone to experience open and enlarged pores. Enlarged pores may vary in size and remain concealed in the early stages of development. With advancing age and other skin conditions, your pores tend to stretch and enlarge.