Formulation of Lotion with Ethanol Extract of Curcuma manga Val. as UV B Sunscreen and Activity Test using UV-Vis Spectrophotometry

Temu mango (Curcuma manga Val) is a rhizome plant native to Indonesia that contains curcuminoid and flavonoid antioxidant compounds. These compounds are thought to have activity as UV light protectors, especially UV B. This study uses a qualitative test of the compound content in temu mango followed by formulation and activity testing of water in oil (w/o) sunscreen lotion of temu mango in vitro. Optimization of w/o lotion formulation uses Design Expert® (DE) software version 9.0.4.1 with the Simplex Lattice Design method. The DE software obtained 13 runs of w/o lotion formula and continued with physical properties evaluation to determine the optimum formula. The optimum formula of lotion w/o predicted by DE software was tested for physical stability for four weeks, SPF test, percent pigmentation, and percent erythema using UV-Vis spectrophotometry. The results of the study show that temu mango extract was found to provide an SPF value at a concentration of 0.3 mg/mL with an SPF value of 16.62. The results of the optimum formula of lotion w/o were 7%glycerin, 7% cera alba, 5% cetyl alcohol with a value of stickiness of 0.70 ± 0.03 seconds, spreadability of 13.20 ± 0.83 cm2, and viscosity of 95.19 ± 3.06 dPa.s. Referring to the storage results, the optimum formula of w/o lotion from temu mango extract was stable during one month of storage. The w/o lotion in the optimum formula produced an SPF value of 15.06 ± 0.39, percent erythema of 10.95%, and percent pigmentation of 10.41%.