Baby powder/corn starch can help a lot here, as well. I strongly recommend corn starch over baby powder, because it’s easier to handle, just don’t breathe either of them in, if you can avoid it. Most baby powders are made from ground mica (a very soft rock, which is then ground into a fine powder), so I try to avoid those.
It works really well for me to prevent sticking. I use it as an aid to keeping the skin dry.