Ahhh … coffee.  The world runs on coffee.  We drink it (sometimes too much), but can we put it on our skin?  And if we do, what will happen? I always want to know if there have been any formal studies on skin care ingredients.  I search these studies out and then try to determine if they have any meaning.  Topical application of coffee extract has been studied, not a lot, but what has been done shows promise. Where Does Coffee Come From? The extract comes from coffee berries which…