We have pores all over our body, tiny holes that contain hair follicles and act as outlets for sebum, the natural oil produced by our skin. The size of the pores varies, when the sebaceous glands are active the pores appear larger. Pores also appear larger as one gets older and the skin starts to sag. When pores are clogged with sebum and dead skin cells they stretch beyond their normal size becoming enlarged.
To make pores appear smaller you need to act on reducing the activity of the sebaceous glands by using the proper skincare products.