Physical Evaluation of Anti Acne Mask With Ethanol Extract of Purple Sweet Potato Leaf (Ipomoea batatas (L.) Antin-3 Varieties: Evaluasi Fisik Masker Anti Jerawat Dengan Ekstrak Etanol Daun Ubi Jalar Ungu (Ipomoea batatas (L.) Varietas Antin-3 . Pharmasci [Internet]. 2021 Jul. 16 [cited 2026 Nov. 11];6(2):69-73. Available from: https://ejournal.akfarsurabaya.ac.id/index.php/jps/article/view/219