<![CDATA[Air pollution is a serious global public health concern that may negatively affect skin health. Red spinach herb (Amaranthus tricolor L.) contains flavonoids and tannins that have potential benefits in maintaining skin moisture. This study aimed to develop a nanoemulsion face mist containing red spinach herb extract and determine the best formulation based on physical quality and skin moisturizing activity. The extract was obtained through maceration using 96% ethanol and formulated into four nanoemulsion face mist preparations: F0 without extract, F1 with 1.5% extract, F2 with 2% extract, and F3 with 2.5% extract. Evaluation parameters included particle size, organoleptic properties, pH, homogeneity, viscosity, spreadability, drying time, irritation test, hedonic acceptability, and skin moisture measurement using a digital skin tester. Data were analyzed using Microsoft Excel and SPSS. Phytochemical screening confirmed the presence of flavonoids and tannins in the extract. All formulations demonstrated good physical quality. Formula F3 showed the highest skin moisture value at 45.5%, compared with F0 (38.6%), F1 (40.2%), and F2 (42.6%). Thus, red spinach herb extract can be formulated into a nanoemulsion face mist, with F3 identified as the optimal formulation.]]>
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