I've always been self cautious about my underarms because they are a dozen shades lighter than my skin tone :( So I tried Retin A to get rid of the problem but now my skin is red & peeling. I was wondering if this is normal? If it is, how long will it take for my real skin to show through? I'm using Retin a 0.01% & Dr.Freds Summit Whitening cream twice a day. Thanks!