Optimization of the Formulation for a Transdermal Hydrogel Patch Containing Basil Leaf Essential Oil (Ocimum basilicum) using the Factorial Design Method. JFM [Internet]. 2026 Oct. 30 [cited 2026 Nov. 1];9(1):1013-2. Available from: https://ejournal.medistra.ac.id/index.php/JFM/article/view/4042