I think your dosage or tapering is not proper . Sometimes these acne need a desired dosage for sufficient time and some injections at times also are needed . Since you are from Delhi it's better if we examine your skin type and reasons for recurrence. You can visit our website www.drsuruchipurimakeovers.com , B-2/31 janak Puri , New Delhi or u can seek information on 9868 080340 Since Dr.Suruchi Puri practice is limited to cosmetology and most of her patients are of your age group. , definitely you will get some answer for your queries as she has a vast experience of 17 years