I think you mean blackheads? Whiteheads are similar, except that a layer of cells is over the pore and as it doesn't come in contact with the air, it remains white. I get them everywhere, as I have VERY oily skin. And they are NOT caused by lack of hygiene or anything. Just that the pores clog, and as the sebum oxidizes, it gives it a dark color, as the stuff that comes out is white or yellowish. I wouldn't bother doing anything about it. I've tried EVERYTHING and nothing works. It just dries out my skin completely. The most you can do is try to keep the pores empty using strips or like applying pressure to get the 'string' out.