Drospirenone / ethinyl estradiol
"I've been on yaz for about 3 months because of my severe acne. In the first two months my acne remained the same but my boobs increased in about a size and a half, which my doctor warned me about. It doesnt bother me as now my breast are fuller/ rounder however I have quite a few stretch marks. So I'd recommend using bio oil on your chest and hips for the first few months on yaz just in case this happenes to you. At around month 3 my skin is not breaking out anywhere near as much. I'm amazed by my skin, it's never been so good. Overall I have never been so happy with my skin and I haven't even finished my third month. I still feel it getting better every day. I have experienced no other side effects beside slight fatigue."