Windy Marcella, Bangkit Riska Permata and Annie Rahmatillah 2026. Formulation And Antioxidant Activity Testing Of Ethanol Extract Moisturizing Gel From Kesum Leaves (Polygonum Minus Huds.) Using The DPPH (2,2-Diphenyl-1-Picrylhydrazyl) Method. International Journal of Health Engineering and Technology. 4, 6 (Mar. 2026). DOI:https://doi.org/10.55227/ijhet.v4i6.684.