Pratiwi PD, Gusti DR, Angraini RI. The optimization of gelling agent and humectant in antioxidant gel formula with Carica papaya Linn. leaf extract based on simplex lattice design method. JPS [Internet]. 2023 Dec. 28 [cited 2024 Nov. 21];6(5-si):283-91. Available from: https://journal-jps.com/new/index.php/jps/article/view/430