Clogged pores on the nose, face and forehead are the bane of many of us and can arise on any skin type. Clogged pores can lead to acne and inflammation and can also result in infections. Our skin contains millions of open pores that allow the skin to breathe. Each pore contains a hair follicle, as well as sebaceous (oil) glands, which produce an oil called sebum. When sebum collects in the pores and combines with dirt or make-up residue - the pores can become blocked.