Aspadiah, V., N. I. Akib, A. Indalifiany, R. Muliadi, and R. R. Layuk. “Optimization of Tween 80 and Span 80 Combination in the Formulation of Niacinamide-Containing Body Lotion”. Journal of Pharmaceutical and Natural Resources, vol. 1, no. 1, June 2025, pp. 1-7, doi:10.23960/jpnar.v1i1.pp1-7.