Hi, I've been using Obagi Nuderm since last August. It's wonderful of course. My melasm gets pretty bad - I am 47 and even with strong sunscreen (50 - mineral sunscreen) I literally get a full facial mask of melasma. It is now creeping up and down my neck. ugh We have a boat and a beach house so I wear a hat and sunscreen but I love being outside. thanks for any input.