But adults have a problem with acne and out of puberty. The treatments for acne remain the same regardless of the age of the patient. Acne occurs when the dirt is trapped in the pores in the skin. The dirt is causing friction in the small pores and infection occurs. The body of course, tries to cope with the infection and scabs over the infected area. So the bump that appears on the skin. Under the protective layer of skin that grows on top of infection is a white substance, or pus. Skin cleansing is probably the best acne treatment. The skin is the largest organ of the body and serves as a protection of our body should be to prevent infection from blood and organ systems.