Contrary to popular belief, acne is not caused by dirty pores or eating chocolate. Acne is actually caused by overactive sebaceous glands. Hormones in you body cause acne to appear. Acne is extremely common in people ages 12-24, when our hormones are very active due to puberty, but many people continue to have acne outbreaks throughout their lives. Acne can show up on the face, neck, chest, back, and shoulders. While it is not life threatening, acne can cause scarring and emotional distress to those that suffer from it. This is why acne skin care is so important.