Hi.. Welcome to HEALTHCARE MAGIC.. I have gone through your query and can understand your concerns.. As per your complain pimples or acne can occur due to a number of causes like oily skin,clogged pores, bacterial infection, inflammation,overexposure to sun etc.. The dark spots seems to be due to post-inflammatory hyper-pigmentation secondary to inflammation caused due to pimples.. You can wash your face with salicylic acid containing facewash, apply clindamycin and benzoyl peroxide containing ointments, do cold compresses and apply retinoid containing gel like Adapelene.. For dark spots kojic acid containing creams and glycolic acid and arbutin containing cream/ointment can help.. Take Vitamin C supplements.. Scrub your face twice a week with a gentle face scrub.. Apply non-comedogenic [anti-acne] sunscreen lotion when ever you go out into sun.. Drink plenty of water and maintain a good hygiene of face.. You can also go for microdermabrasion and chemical peeling under supervision of trained dermatologist as well as he can advise you antibiotics and retinoids for pimples.. Hope this information helps.. Thanks and regards. Dr. Honey Nandwani Arora.