No matter your age, clogged pores and blackheads can be unsightly and take a toll on confidence. In teenage skin, there’s a lot of oil production, so pores get clogged and look large. In adults, the collagen that surrounds the pore to keep it nice and tight begins to deteriorate with age. So the skin around the pore sags and the pore really opens up. Often the pore can become clogged with oil and dead skin cells that oxidize causing a grey tone.