Kartika, A. and Minerva, P. 2023. Utilization of Snapper Spinach Leaf Extract (Amaranthus Hybidrus L) in Peel-Off Gel Mask Preparation for Aging Face Skin Care. International Journal of Natural Science and Engineering. 7, 1 (Mar. 2023), 28–39. DOI:https://doi.org/10.23887/ijnse.v7i1.57767.