>>162137i use likas papaya soap, lots of sunscreen on any exposed body parts, skincare products with lightening benefits (they usually contain things like rice, lemon, etc), and supplements. vitamin c, glutathione, and biotin.
the vitamin c and glutathione thing takes a long time. well, like a couple of months when paired together. vitamin c alone supposedly brightens your skin over time. glutathione is an antioxidant that's used for a bunch of different things, but one of the "side effects" is brighter skin.
since i'm naturally light, i don't know how much these products have lightened my skin, but they definitely keep me from getting tan (as i tan easily). i also scar easily, and that shit went away. even when i get a zit now, the scar doesn't last long. also my armpits lightened and are now the color of the rest of my skin.