Safety and Efficacy of Photodynamic Therapy with ALA 10% Topical Gel Activated by Red Light versus ALA 20% Topical Solution Activated by Blue Light for the Treatment of Actinic Keratosis on the Upper Extremities: A Blinded Randomized Study . SKIN The Journal of Cutaneous Medicine, [S. l.], v. 8, n. 6, p. s485, 2024. DOI: 10.25251/skin.8.supp.485. Disponível em: https://skin.dermsquared.com/skin/article/view/3060. Acesso em: 30 apr. 2026.