Karlina Amir Tahir1, - and Khairuddin Djawad2, - and Sartini Sartini3, - and Arief Budiyanto4, - and Ahmad Lalo5, - and Maulita Indrisari7, - and Syamsuri Syakri1, - and Asrul Ismail1, - and Khaerani1, - and Anshari Masri8, - and Upik A. Miskad9, - Collagen Thickness and Density in BALB/c Mice Exposed to UVB Light after using Siam Weeds Cream (Chromolaena odorata L.). Research J. Pharm. and Tech. 15(9): September 2022.