There are many things that can aggravate acne. The main acne triggers are hormones, stress, and some foods. What holds true for one person may not hold true for another. In the professional world of skin care, these are the things that are considered triggers. Hormones are a big trigger when it comes to acne. Many women get hormonal acne right before they menstruate. Women tend to get more adult acne, while teen boys get more severe acne...