hi..Thanks for your query Acne can present in several forms. This includes whiteheads, blackheads, and red, inflammed patches of skin (such as cysts).In the course of evolution, you may have any or all of these.Sometimes ,over a period of time, even if you are under a specific for of therapy,one agent might not be enough to handle it completely.This is based on the various internal hormonal stimuli as well, which can change several times. Do not use heavy/thick creams ..Use only gel based moisturizers/ sunscreen for regular use.U can use a cleanser containing Salicylic acid/ Glycolic acid on a regular basis. You can start taking Salicylic acid peels from a qualified dermatologist to achieve a better control of your acne.These are safe and latest methods whereby you can achieve a better control, but not be perturbed by the side -effects of long term antibiotic therapies. Also acne is a very recurrent condition,as you see...It is essential to maintain yourself on a control by doing frequent followups with your doctor and changing meds as and when required. As for dark circles, you can start using Kojic acid containing creams once daily..Dark circles are frequently very resistant to therapy and the treatment depends upon assessment by your dermatologist. Hope this helps.Take Care!