OPTIMIZATION OF GUMITIR FLOWER EXTRACT (TAGETES ERECTA L.) SUNSCREEN CREAM: SIMPLEX LATTICE DESIGN METHOD. JPSA [Internet]. 2023 Dec. 1 [cited 2026 Sep. 21];5(2):93-100. Available from: https://ejournal3.unud.ac.id/index.php/jpsa/article/view/3435