“An Overview about Therapeutic Uses, Clinical Efficacy, Safety and Classes of Retinoids and Its Efficacy for Treatment of Skin Aging ”. University of Thi-Qar Journal of Science 10, no. 1 (June 28, 2023): 5–10. Accessed July 22, 2024. https://jsci.utq.edu.iq/index.php/main/article/view/914.