I haven't used Accutane, but I had an allergic reaction to a Mary Kay lipgloss and it got so bad my lips actually swelled, let alone were red and cracked. It was awful! I used petroleum jelly, chapstick, Sally Hanson Lip Treatment, Carmex, Pure Cocoa Butter lip balm and Vitamin E oil, but nothing worked except the Medicated Blistex in the red and white tube. I would use it a few times during the day and put it on before I went to bed, and within two days, easily, there was a marked improvement. Gone in a week! It's cheap and easy to find at most drug stores or grocery stores.
Good luck!