My skin tone is uneven. I have dark spots on my forehead, center of nose and around my chin which makes me look very dull. I even hasitate to take my snaps because they looks so bad. Also my skin is oily as pimples occur on my face frequently. Here is my one pic. Can anyone help me with accurate giudance as I have tried so many products like glyco acid peel, melalite cream and many medicines like isotretinion.