I was told at my counter that MAC says that they HAVE TO accept any returns for any reason (unless the product is pretty much used up) and if there is no receipt, it can be given as a credit or exchange only. However, my freestanding store and lots of other stores refuse returns without a receipt. I would email MAC if you aren't able to return it, because they may be willing to let you send it back to them for an exchange. It might seem like a hassle, but it is better than just having something you won't use.