Suggest Medication For Pigmentation

I m 68 years old and a single active woman. Pigmentation started appearing in my face 3-4 years ago and they are gradually increasing in size and darker in shade. I have been having treatment by Shakura the natural way but to no avail. I m now desperate to treat them before they get worse and more stubborn! A friend who also goes to Shakura Skin Clinic told me about a product by Cetaphil that has helped her pigmentation to lighten faster than the clinic has. Can you recommend me any product that can help my pigmentation that had increased and spread? I have tried several products with promises but have not helped but made them darker and worse. Thanks!!