Epo works. Olive oil is used for perneal message so you don't tear
Never heard of using it that way. But evening primrose oil pills vaginally worked for me and lots of other women. I used 5 vaginally for two nights and was in labor the next morning
It might not be free of bacteria, either the oil itself or your finger or whatever you use to put it inside. And of course, it will probably just drool out again all over everything.