THE STUDY OF GEL BODY LOTION CONTAINING INDRAMAYU MANGO (MANGIFERA INDICA L.) PEEL EXTRACT

The skin of Indramayu mango contains secondary metabolite compounds such as phenols and flavonoids that function to inhibit the enzyme Hyaluronidase (HYALase), which is an enzyme that breaks down hyaluronic acid. Hyaluronic acid plays a role in maintaining moisture in the skin. The extract of Indramayu mango skin is formulated into a gel preparation due to its good spreading properties on the skin, clear appearance, stability during storage, and resistance to flowing on the skin surface, allowing the active substances from the extract to remain in contact with the skin for a longer period. This study aims to test the stability of the gel preparation of Indramayu mango skin extract (Mangifera indica L.). The gel preparations were made in 4 formulas with different concentrations of Indramayu mango skin extract: F0 (without extract), F1 (0,15 g Indramayu mango skin extract/ 100 g), F2 (0.27 g Indramayu mango skin extract/ 100 g), and F3 (0.5 g Indramayu mango skin extract/ 100 g). The physical stability test of the gel preparation was carried out at temperatures of 28°C and 40°C for 28 days. Data analysis was performed using SPSS software, employing one-way ANOVA for normally distributed data and the Kruskal–Wallis test for data that did not meet normality assumptions. The stability test results indicated that F3 had the best stability during the 28-day storage, as shown by the results of the homogeneity test, pH, viscosity, spreadability, and adhesion, which did not experience significant changes during storage.