I Gusti Ngurah Agung Windra Wartana Putra and I Gusti Ayu Agung Septiari 2023. OPTIMIZATION OF GUMITIR FLOWER EXTRACT (TAGETES ERECTA L.) SUNSCREEN CREAM: SIMPLEX LATTICE DESIGN METHOD. Journal Pharmaceutical Science and Application. 5, 2 (Dec. 2023), 93–100. DOI:https://doi.org/10.24843/JPSA.2023.v05.i02.p06.