What is the best cream to get rid of darker spots for an oily skin?

What is the best cream to get rid of darker spots for an oily skin? What is the best cream to get rid of darker spots for an oily skin? Anything is excess is bad for health even oxygen. Pre-mature new born are kept in nursery and given oxygen. Any excess of oxygen in nursery causes cerebral palsy and that is the worst disease. Skin top layer is nourished by diffused oxygen coming from the layers...