This evidence-based book sets the standard for using natural remedies for treating and preventing acne. It is written for both laypeople (e.g., those, who or whose loved ones, are inflicted with acne) and professionals (e.g., those in the fields of biomedical science, pharmaceutical science, clinical medicine, nutrition, and health promotion, etc.) who want to learn about the most current scientific findings and most definitive clinical evidence behind a wide variety of natural cures of acne. This book is different from many others on natural remedies of acne. One of its most distinctive features is that it is an evidence-based book, meaning that all the statements in the book are based on findings from solid scientific research, especially randomized controlled clinical trials-the most rigorous clinical study design for demonstrating the efficacy of therapeutic agents, including natural remedies, in treating a particular disease. Solid scientific findings are nearly exclusively published in reputable, peer-reviewed scientific journals. In this context, much information on the so-called "anti-acne natural remedies" is accessible through the internet, frequently in the forms of blog posts and web fora. However, such publicly accessible information is often found to be either fake, unreliable, or lacking scientific basis, thereby causing confusion and misleading. Thus, this book is written based solely on solid scientific findings and conclusions reported in reputable scientific journals. The sources of the scientific literature are cited at the end of each of the chapters so that the reader can further look into the details of the scientific and clinical findings.