Aspadiah, V., Akib, N. I., Indalifiany, A., Muliadi, R., & Layuk, R. R. (2025). Optimization of Tween 80 and Span 80 Combination in the Formulation of Niacinamide-Containing Body Lotion. Journal of Pharmaceutical and Natural Resources, 1(1), 1–7. https://doi.org/10.23960/jpnar.v1i1.pp1-7