Primadani, Nur Baetty, Rugayyah Alyidrus, Nurfiddin Farid, and Nielma Auliah. “Formulation and Effectiveness Test of Lip Cream Preparations From Ethanol Extract of Red Fruit Seeds (Pandanus Conoideus L) As a Natural Dye Using DPPH (1,1-Diphenyl-2-Pikrihidrazil) Method”. JOPS (Journal Of Pharmacy and Science) 7, no. 1 (December 31, 2023): 136–142. Accessed April 3, 2025. https://jurnal.univrab.ac.id/index.php/jops/article/view/4173.