Acne is a chronic and multifactorial skin condition affecting about 80% of persons aged 11 to 30 years, the majority of whom are adolescents (Morelli, 2007, Shamban and Narurkar, 2009, Zaenglein and Thiboutot, 2006). Although acne has no cure and has the potential to cause emotional distress and permanent scarring, proper treatment can control the disease and greatly limit the morbidity. In rec...