Formulation Optimization of a Combined Mangosteen and Red Dragon Fruit Peel Extract Gel with Varying Carbopol 940 Concentrations. Axion Health Multidiscip. J. [Internet]. 2025 Nov. 16 [cited 2026 Jul. 21];1(01):1-8. Available from: https://journal.orbioninstitute.com/index.php/axion/article/view/58