I found some info that hydroquinone may not be safe (it said to be band in UK for being cancerogenic). However Dr. Baumann suggested Magnesuim ascorbyl phosphate , which is an oil soluble and more stable version of vitamine C. Here is some info on that:
www.smartskincare.com/treatments/vitcderiv.html
I find that Avalon Organics have a pretty good line (having my skin to rwact to everything there is, this one is good):
www.avalonorganics.com/images/uploads/4492e766b7b57.pdf
Other possible ingridients you can find in the book. I am not sure if they are different for different skin types, since some may be more irritating then others, making them undesirable for some.
Here is some read about the ingridients and such:
skin-care.health-cares.net/skin-whitening.php