I've recently developed small bumps on my forehead. Since I haven't neglected my skincare routine, I suspect lack of sleep might be the cause, but I wondered if I could help improve it through my diet. So, I researched some ingredients that are good for acne improvement. Furthermore, to boost my metabolism without burdening my intestines too much, I've decided to make soup today. First, about the causes of acne: ① Physical causes 1. Excessive sebum secretion: The forehead has a high...