Right now I'm using one from bath and body works but I have heard good things about the Jergens skin firming lotion. I think I see improvement but my skin is not really saggy yet since I havn't lost that much weight so I can't really say whether it would work on someone with very loose skin or not. I moisturize anyways so I figured why not use a moisturizer with something extra in it instead of a regular one. The price is not really that different so I thought it couldn't hurt.
