I don't care for the "judgy" comments that have been made in this thread (and the "throwing up" comment was utterly out of line). I'm glad the conversation has drifted back to a more factual discussion.
Like I told the original poster, I accept there are chemicals that can lighten skin; I just don't see how these chemicals
in a soap will do much good. They need time to work, and even if a person left the soap lather on the skin for some minutes while bathing the rest of the body, that's really not much time.
Like Carolyn (cmzaha), I think these chemicals are going to be a lot more effective in a leave-on skincare product that stays on the skin for hours, not minutes. I have a blotch of hyper-pigmentation on my face, and I'd be formulating a leave-on
skin care product if I wanted to lighten that area.