Here is a video of a man that fled Oregon due to discriminating behavior from his...blue skin. Seems that he drinks a silver solution to help with all that ails him, unfortunately it has turned his skin blue.
Most of us are concerned with blemishes and wrinkles, this poor man has blue skin. I don't think all the skin lighteners in the world would help him. Instead of a derm, he needs a psychologist, I'm afraid.