research Efficacy of an oral contraceptive containing EE 0.03 mg and CMA 2 mg (Belara®) in moderate acne resolution: a randomized, double-blind, placebo-controlled Phase III trial
This study found that the combined oral contraceptive containing ethinyl estradiol and chlormadinone acetate was effective in reducing moderate papulopustular acne and other androgen-related skin disorders compared to placebo.




