Never thought about the epoxy before. It doesn't seem damaged and I use a cheap Vulfix bristle.
I get along good with a hot towel as well, this just makes it better. At least for me. I don't know why, but the face doesn't sweat as much when you put very hot soap with it and lather directly on the face, which leads to better results in stretching the skin as it isn't that slippery anymore.