Risyafa J, Suprapto S. Optimization of Strawberry Juice Powder (Fragaria x ananassa) and Castor Oil Lip Cream Formulation Using the Simplex Lattice Design Method. JPS [Internet]. 2026 Jan. 30 [cited 2026 Feb. 4];9(1):237-50. Available from: https://journal-jps.com/new/index.php/jps/article/view/1363