Formulation, Characterization and Optimization of Peel-Off Gel of Soybean Extract as a Face Mask

Abstract

Materials and Methods MaterialsAll chemicals used were of analyrical grade and were commercially available. These include: kaolin (Merck, Germany), ethanol 96% (EtOH) (Golriz, Iran), polyvinyl alcohol (PVA) 100%, fully hydrolyzed (Mw approx. 30000) (Merck, Germany), carbomer 940 100% (KBR, India), phenoxyethanol ≥ 99% (Merck, Germany), EDTA disodium 100% (Sigma -Aldrich, Germany), propylene glycol 100% (Merck,