Acne is a common disease that effects to almost all the teenager during puberty. It is caused on hair follicles of face, chest and back. Dr. Nirved Jain says that, There are many factors through which acne occurs when sebaceous (oil) glands attached to the hair follicles are stimulated at the time of puberty or due to other hormonal changes. Oil is a natural substance that protects our skin but access causes problem. Other reasons like the food you eat, dirt and pollution is also a cause of acne, and a stress on which an individual goes through other reasons like Heredity, Drugs or mental pressure.