Yes, not all the time but sometimes to escape the massive crowds that gathered wherever he went, he'd send the double to where the people were and he'd try and make a quick exit somewhere else. He didn't use them for press stuff and concerts though.
He did not use any cream... He had a serious disease called vitiligo. If you were to search it on Youtube he explains that he uses nothing but make-up and he has never heard of any skin cream or skin...