Formulasi dan Uji Stabilitas Fisik Krim Tabir Surya Nanoenkapsul Ekstrak DaunUbi Jalar Ungu (Ipomoea batatas L.) Varietas Antin-3: Formulation and Physical Stability Test of Sunscreen Cream of Purple Sweet Potato Leaf Extract (Ipomoea batatas L.) Antin-3 Variety Nanocapsulated. J. Sains. Kes. 2024;5(5):716-722. doi:10.30872/jsk.v5i5.583