Sadly, most lotions and potions have very little real effect. Best bet is to find a good makeup counter such as Bobbie Brown or Mac and get advice on how to apply makeup to 'hide' the droopiness. And look up towards the ceiling when you get your picture taken - you might look like you're deep in thought, but it could lift your eyes! (and make you look deep!)
Sorry this is a rather late answer but when you get your pic taken look to the side slightly and it can look better than a straight head on shot. I saw this on the Oprah Winfrey show once and it does tend to work for me usually. It stops a double chin look and might improve your eyes perhaps?