I have little bit darkness from one side of my face. My face skin is oily and also sensitive. But that darkness is not too much. But I feel little bit darkness due to which I my face feel fair from one side amd from other side little bit darkness. And I am not using any cosmetics product. I want to have a fair face. Amd I do not to use any any cream for long period time of. Just I want permanent result. And this problem was not earlier. Although I have been facing this problem for many days. Please suggest me a good treatment. I am 21 years old boy.