Open pores are the opening on the surface of the skin. They are small pit-like pores, and they generally appear in combination with oily skin.
Open pores also accumulate dirt, clog, and dead skin cells which, leads to many skin problems like acne, pimples, blackheads, whiteheads, and excess production of sebum.
Open pores on your nose, forehead, and cheeks can appear larger as you age, or when your pores are clogged.
The latest available treatments can unclog the enlarged pores, decrease the size of the hole, and also eliminates the dead skin cells from being accumulated in the pore.