Absolutely love the idea of these. I ordered both the cotton and 'silk' versions and like them both. I have washed them a couple times and they seem to come out just fine - love that you can dry the 'silk' version compared to my other cases that need to line dry. There are two main issues however - (1) I have a hard time keeping track of which side and which layer I have used day to day. You literally have to keep notes, and if you toss and turn in the night, its nearly impossible. Which pretty much defeats the purpose - unless you physically alter the case by marking each page/side. An embroidery would be a next-level touch. (2) similar to all the other reviews, the tie backs are difficult to thread even for young agile fingers and good eyes - and they often come undone in the night.
All said and done, they are soft, still look great on my bed, and I genuinely feel that this a much better than the alternative for keeping my acne away and giving me a bit more peace of mind.