You can blame your oily skin and large pores on your genes. You can try to change your lifestyle or your diet, but if one of your parents has oily skin, chances are you will as well. However, if it comes and goes, it may have more to do with hormonal shifts.
In some cases, oily skin can be the result of taking oral contraceptives, which can alter hormone levels and increase oil production. Oily skin is one of several side effects associated with taking steroids. Stress can also cause oily skin. When you become tense, your body releases a hormone called cortisol, which can increase your skin’s oil production.
As we get older, skin loses elasticity, which can also make the pores look larger. Sun damage also affects the appearance of pores because it causes the skin to thicken. Skin cells collect around the edges of pores, stretching them out.