It is my belief that one of the more interesting things about skin is that blackheads and enlarged pores come from within. All the textbooks may say that blackheads are dirt related and that enlarged pores are from sagging skin, but how often do clients that are meticulous about cleaning still see blackheads? How often does extracted skin immediately refill with impurities? How often do young clients with taut skin still see enlarged pores on the nose where no laxity exists? In fact, why do enlarged pores seem to happen primarily on and around the nose when sun exposure is allegedly one of the leading causes of larger-looking pores, which would suggest the forehead should be the worst area?