I love my pillow, and I really wanted to like the pillowcase, but I've really been disappointed. The shape is great and the fabric feels nice, but from the first night I slept on it, there were visible oil marks everywhere my skin touched the pillowcase. I don't think I have particularly oily skin, nor do I use heavy moisturizers at night. I've had it a little less than two weeks, and washed it three times (once following the washing instructions, once following stain removal suggestions from c...