I just bought an aerosol of this - however I now think I may have bought the wrong product (it remains unopened so could probably take back and exchange as I have receipt). I thought it was a fake tanner for my legs - that is what I want - I just want to do my legs but I want to fake tan them not use tan make up on them that washes off - have I got the wrong thing? If so, what should I buy instead please? thanks so much