Hi Dear , Welcome to HCM. Understanding your concern. As per your query you have pimples on your face which is because of increased sensitivity of getting pigmented. It could be due to clogged pores of sebaceous gland which gets filled with sebum ,dead skin and bacteria get infected. You are taking medication and not getting benefited. Need not to worry. I would suggest you to apply cream containing Kojic acid such as Kojivit. It will resolve. Avoid oily, fried and sharp food substances. Apply cotton dipped in tea tree oil to lighten the pigments. Apply aloe vera gel and apply azelaic acid containing cream twice a day as this is safe and natural extract of cereals. You can visit dermatologist once and can go for chemical peeling or micro abrasion if your symptoms not resolving. Take supplements rich in vitamin C. Hope your concern has been resolved. Get Well Soon. Best Wishes, Dr. Harry Maheshwari