Welcome and thanks for posting your query to HCM.
acetate and ethinyl estradiol
used for the control of acne, hirsutism
in women with various other uses in regulating menstrual cycle.
Now as per manufactures prescribing information, in the indications for acne it is recommended for at least 3 months and for contraception it can be continued as long as is desired. So taking this information in consideration there is no contraindication in taking pills for long time for your acne problem also. But I would recommend you to kindly take it under gynecologist advice to check for any contraindication for long term usage. Even from your side also you should check for headache, water retention, weight change, breast tenderness, menstrual irregularities or any other side effect if you are planning to take it for long time.
With best health wishes,
Dr Sanjay K Kanodia
MD ( Dermatology and STD/ Venereology)