Pores are the openings around hair follicles and sweat glands on your skin and they help liquids move through the surface of your skin. They are everywhere on your skin where there are oil glands but they are most concentrated on your face. 

Sometimes they become enlarged enough to become visible, particularly around areas like the nose and cheeks. 

Common causes for enlarged pores include your age, skin type, genetics and excessive sun exposure. They can also be triggered by hormonal changes, inflammation and your skin care regimen. 

You can minimise the inflammation in your pores and the appearance of enlarged pores by stimulating and plumping the collagen that surrounds the pores.