Formulation Sunscreen Emulgel of Sweet Potatoes Leaves Extract (Ipomoea batatas (L.)) Antin-3 Variety: Formulasi Emulgel Tabir Surya Ekstrak Daun Ubi Jalar Ungu (Ipomoea batatas (L.)) Varietas Antin-3. Pharmasci. 2020;5(2):49-54. doi:10.53342/pharmasci.v5i2.174