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. https://doi.org/10.53342/pharmasci.v5i2.174.