Hi.. Welcome to HEALTHCARE MAGIC.. I have gone through your query and can understand your concerns.. As per your complain acne and pimples can occur due to a number of causes like oily skin, hormonal imbalances, clogged pores, bacterial infection, inflammation and excess sun exposure.. In your case it seems to be due to hormonal imbalance and oily skin.. Dark spots left after pimples heal are due to post inflammatory hyperpigmentation.. I would suggest you to wash your face with Salicylic acid containing facewash.. You can apply a combination of Benzoyl peroxide and Clindamycin gels.. You can also apply Adapelene gel at night. You can exfoliate your skin twice a week as it help in removing dead skin as well as unclog the pores.. For dark spots apply creams containing Kojic acid, glycolic acid and arbutin.. Vitamin E gel can also help.. Limit sun exposure and always apply a sunscreen lotion when exposed to sun.. Hope this information helps.. Thanks and regards. Dr.Honey Nandwani Arora.