acne
"Before I started taking birth control I have light-moderate acne. I originally started taking Alesse for contraceptive reasons, took that for 4 months, and it made my breakouts constant. I switched to Yaz, and within a week my acne was virtually gone. Towards the end of the month, around my period, the acne came back, but after the first week of the second pack, my acne was almost gone, and its been another full month and I only ever have an occasional break-out (usually a single pimple) that clears up in about a day or two."