Widyastuti, Z. and Widhiati, S. 2022. Ceramide is More Effective than Shea Butter in Maintaining Skin Acidity. Berkala Ilmu Kesehatan Kulit dan Kelamin. 34, 1 (Mar. 2022), 5–9. DOI:https://doi.org/10.20473/bikk.V34.1.2022.5-9.