Hi Dear, Understanding your concern. Some pores become blocked . This is due to the skin at the top of the pores becoming thicker, combined with dead skin cells that are shed into the pores. Some times bacteria also get entrapped inside pores and cause severe form of cane . There are some trigger factors also for acne formation like excess sun exposure , hormonal changes in teens , stress , oily skin and skin infection. Wask your face with facewash containing benzoyl peroxide twice a day with cold water . Exfoliate your skin with water based exfolient 2-3 times a week . Use cream or gel containing azelaic acid twice a day .,which natural extract of cereals and safe for use . Apply braod spectrum sunscreen with SPF at least 30 while in exposure to sun . Apply aloe vera gel or vitamin E oil at night . It condition doesn t get better in a monthe then consult dermatologist for proper diagnisos . Doctor may prescribe clindamycin gel , oral azithromycin for A week ,isoteritenoin or steroid topical gel . Hope your concern has been resolved. Get Well Soon. Best Wishes, Dr. Harry Maheshwari