A U.K. survey found that on average single men only change their sheets four times a year. And while we certainly hope you are swapping out your linens much more frequently, dirty pillowcases can lead to clogged pores. Nasty as is sounds, bacteria can build up on your bed and your face rubs around on it for a good eight hours a night. Well, that just can’t be good. If your skin is oily, change those sheets (or at least your pillowcases) twice a week. It might be a pain, but isn’t a clear complexion worth it?
Acne (acne vulgaris, common acne) is a disease of the hair follicles of the face, chest, and back that affects almost all teenagers during puberty -- the only exception being members of a few primitive Neolithic tribes living in isolation. It is not caused by bacteria, although bacteria play a role in its development. It is not unusual for some women to develop acne in their mid- to late-20s.