Suha Nadem Muhsin, shireen Ali Hasan, and Makarim M.Ali Hassan, “An overview about Therapeutic uses, clinical efficacy, safety and classes of Retinoids and its efficacy for Treatment of skin aging ”, UTJsci, vol. 10, no. 1, pp. 5–10, Jun. 2023, doi: 10.32792/utq/utjsci/v10i1.914.