Célia Luiza Petersen Vitello Kalil, MD, PhD, is the director of the Célia Kalil Dermatological Clinic at Porto Alegre (RS), Brazil. She holds a PhD in Medical Sciences from the Federal University of Rio Grande do Sul, Porto Alegre, Brazil and is volunteer Preceptor of the Federal University of Fronteira Sul - Passo Fundo, Rio Grande do Sul, Brazil. Dr. Kalil is a member of the Brazilian Society of Dermatology and of Dermatological Surgery; Past president of the Brazilian Society of Dermatology – Regional Rio Grande do Sul - Brazil (1997-2000); Delegate of the Brazilian Society of Dermatology - since 2001; International Fellow Member of the American Academy of Dermatology; Member of the European Academy of Dermatology and Venerologie; Member of the Ibero-Latin American College of Dermatology and Member of Academy of Cosmetic Dermatology. Valéria Campos, MD is a visiting Professor of Dermatology and Laser at Jundiaí Medical School,Brazil and member of the Brazilian Society of Dermatology. She holds Master’s in Medical Sciences from the University of São Paulo, Brazil and is specialist in Laser and Dermatology at Harvard Medical School.