<![CDATA[Excessive exposure to ultraviolet (UV) radiation can adversely affect skin health, causing erythema, hyperpigmentation, premature aging, and increasing the risk of skin cancer. Natural-based sunscreen products have gained attention because plant-derived compounds possess antioxidant properties and the ability to absorb UV radiation. Red shoot leaves (Syzygium myrtifolium Walp.) contain flavonoids, phenolic compounds, and tannins that potentially contribute to photoprotective activity, whereas Aloe vera is known for its moisturizing and soothing properties. This study aimed to develop an emulgel containing a combination of purified red shoot leaf extract and Aloe vera extract, evaluate its physical characteristics and stability, and determine its Sun Protection Factor (SPF) value. The study was conducted experimentally in the laboratory using six formulations, consisting of a blank formulation (F0) and five formulations containing different concentrations of the extracts (F1–F5). Physical evaluations included organoleptic characteristics, homogeneity, pH, spreadability, adhesiveness, and viscosity. Stability testing was performed using a cycling test for six cycles, while SPF was measured in vitro using UV-Vis spectrophotometry based on the Mansur method. All formulations demonstrated acceptable physical properties, with pH values ranging from 6.54 to 6.96, spreadability from 46.4 to 64.0 mm, adhesiveness from 2.01 to 3.18 seconds, and viscosity from 2,377 to 5,380 cPs. The highest SPF value was 6.98 at 500 ppm, classified as moderate protection.]]>
