Gd aftrn sir,i have black marks on my face,can u plz help me?

Physical exam...: To diagnose skin issues, a physical exam where the areas of concern can be seen is important. I am sorry to say that "black marks on face" is not specific enough for me to even begin to guess at what issue you are noting. See your doctor.

Depends: As Dr Noonan said, it depends on what you mean by black marks. If you have flat darker patches on your skin this may be due to too much pigment in those areas. It is tough to treat, especially in darker skinned people. The treatment depends on what is available in your area. See this article: http://tinyurl.com/bq58q69 Some natural substances which may work are here: http://tinyurl.com/lgogqy2