Pengembangan Masker Gel Peel-off Antibakteri Ekstrak Daun Nipah (Nypa fruticans) dengan Pengoptimalan Konsentrasi HPMC: untuk Perawatan Kulit Berbasis Alam

Peel-off gel masks are a practical form of topical cosmetics that are easy to use and help remove dead skin cells and impurities from the skin surface. Nipah (Nypa fruticans) leaves contain active compounds such as flavonoids and tannins, which have potential as active ingredients in skin care formulations. This study aimed to determine the effect of varying concentrations of hydroxypropyl methylcellulose (HPMC) on the characteristics of peel-off gel masks containing ethanol extract of nipah leaves, as well as to identify the formula that provides the most optimal quality. The extract was obtained by maceration using 70% ethanol and subsequently formulated into a gel base. Evaluation was conducted on organoleptic properties, homogeneity, pH, spreadability, viscosity, and drying time. Data were analyzed using normality and homogeneity tests, followed by One Way ANOVA and Tukey HSD. The results showed that all formulas had a uniform dark brown color, the characteristic odor of nipah extract, and differed in form. All formulas met the requirements for normal skin pH (4.5–6.5), spreadability (3–5 cm), and drying time (15–30 minutes). Formulas 1 and 2 also met the viscosity criteria (2000–50,000 cP). However, none of the formulas were homogeneous. Statistical analysis indicated that variations in HPMC concentration affected the organoleptic properties (form), spreadability, viscosity, and drying time. Among the three tested formulas, none fulfilled all the physical evaluation parameters optimally, as all failed the homogeneity test.