Once in a fitting room of one clothes store in Taiwan I saw a sign saying something like
Watch your lipstick carefully no to touch the clothes you are trying on.
While the main concern was pretty much clear to me—the owner of the store didn't want to have lipstick stains on the clothes he was selling—I kind of suspected that the way the thought was expressed was wrong. I tried to come up with my own better version and failed. So, if you were the owner of that store, what would you write on that sign?