What are the physical differences between a dark and light skin other than color?

[edit] Oh I get it wrong. It's not just a creme for dark skin. I see it is a product to bleach dark skin but without bleach?

I don't know what I'm reading here anymore. Basically healthy bleach for dark skin? I feel a bit deceived though. Thought you were against bleaching, but it's just the bleach itself that you're against.