###Human: What are the best Vitamin C serums for removing brown spots from face? ###Assistant: Hi. There are many causes for brown spots on face, it could be: 1. Freckles. 2. DPN- Dermatosis papulosa nigra. 3. Melasma. 4. Post-inflammatory hyperpigmentation. Treatment is different for each, it is very difficult to suggest any treatment for you without seeing your pictures, I will have to see the pictures to make the diagnosis so that I can suggest you the most appropriate treatment options. Please attach your clinical pictures of the face taken in good daylight.