What would happen if stem cells were injected into normal, healthy skin?

I've seen articles where stem cells can repair damaged tissues and have regenerative effects and everything, but does anyone know what would happen if the stem cells were injected into normal skin? Would the cells still differentiate and make...extra tissue, or would older cells be replaced by the stem cells, or what?What would happen if stem cells were injected into normal, healthy skin?
stem cells are what you want them to be. if put into a healthy body, then they take the form of healthy cells and the rest of the day is yours. if placed into a 'bad' body, the cells have a good chance of becoming the healthy cells you wish them to be. know what? since research is still research, and a lot of info is still missing - the end result, good or bad, is still unknown. but what's also known is that the old saying (?): what do you have to lose? if you are possibly dying of something really bad and you have a chance to do something/anything, why not. go for it. you got nothing to lose.What would happen if stem cells were injected into normal, healthy skin?
its no longer normal or healthy skin!

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