Dermatologists have long recognised that progesterone-only hormonal contraception is associated with new or worsening acne in up to one third of adult patients. [Lortscher D, Admani S, Satur N et al. Hormonal contraceptives and acne: a retrospective analysis of 2147 patients. J Drug Dermatol … [Read more...] about Long acting progesterone contraception and teenage acne