Hi.. Welcome to HEALTHCARE MAGIC.. I have gone through your query and can understand your concerns.. As per your explanation the pimple spots or deep scars/black spots left on face after the pimples resolves seems to be due to post inflammatory hyperpigmentation, secondary to pimples and the treatment that can be done is a combination of topical depigmentation creams and certain professional chair side cosmetic techniques.. You can start washing your face with Salicylic acid and glycolic acid containing facewash.. You can apply creams containing Kojic acid, glycolic acid and arbutin.. Vitamin E and C containing creams can help.. Creams that are rich in licorice extract and grapeseed extract can be helpful.. Always apply a sunscreen lotion to reduce photosensitivity effect.. You should exfoliate your skin twice a week with a gentle face scrub.. Hope this helps..