I bought a 4% hydroquinone (I wanted something stronger than the usual 2%) which has 10% glycolic acid. It's a super super cream. All my flakiness is gone, it hasn't broken me and the spots are fading nicely. It's called Glyquin - I think it's only available in Canada - that's where I bought it from (through a website). If you're looking for the regular 2%, there all types available in drug stores - Esoterica is a good one. Oh, the Glyquin costs too - 55 Canadian dollars for a 28 g jar - lasts about a month.