I had got pimples before on my both sides of face, but now pimples are not there, but there are marks of pimple are there, and my face looks dirty because of it. One person has suggested me "betnovate n" cream. He said it will help me to clean my face and marks will also be gone. So my que, is that cream good ?if yes ,then how to apply it. If it is not good, then kindly suggest a good cream, or formula of it? Please. Thank you.