Sianipar, E. A., Avena, A., Narwati, Y. T., & Sagala, R. J. (2025). Peel-off Emulgel Mask Formulation from Ethanol Extract of Frankincense Resin for Acne vulgaris Treatment. Tropical Journal of Natural Product Research (TJNPR), 9(1), 213-218. https://doi.org/10.26538/tjnpr/v9i1.32