I've seen Aloette's Lumitone work wonders on discolorations. It is availalbe without a prescription & contains NO hydroquinone. A frineds daughter (in her early teens) ends up with horrible discoloration on her upper lip if she spends too much time in the sun. Her mom thinks it is probably hormonal since she had the same problem as a teenager. 3 days on the Lumitone & it was gone.