Aspadiah V, Akib NI, Indalifiany A, Muliadi R, Layuk RR. Optimization of Tween 80 and Span 80 Combination in the Formulation of Niacinamide-Containing Body Lotion. J. Pharm. Nat. Resour. [Internet]. 2025Jun.30 [cited 2026Jan.7];1(1):1-7. Available from: https://juke.kedokteran.unila.ac.id/index.php/jpnar/article/view/3596