Anyone change their pillow case everyday? I saw a commercial on the fine living channel over the weekend that said that oils from your face get on the pillow case while you are sleeping. When you go to bed the next night, those oils on the pillow case, from the night before, find their way back onto your skin, and can end up giving you facial blemishes. They said you should change the pillow case linens everyday. Do any of you have knowledge or professional experience in skin care? If so, is this true? Should we be changing our pillowcases nightly? Thanks all.