Large pores can be quite upsetting. They make your skin look imperfect, dull and unsmooth. Though, pore size is genetic, it is possible to reduce their appearance. They may vary depending on the type of skin you have. Aging, sun damage, improper hygiene, use of bad/low quality products and cosmetics can make your pores bigger in size.
As your skin ages, it loses collagen that helps it to stay elastic, making support to oil glands difficult, thereby increasing your pore size. According to Derma Doctor, pores can become visible and seem larger due to inadequate skin care and issues such as blackheads, which can expand your pores. Genetic factors, environmental damage and aging also contribute to pore size.