Setiawan AA, Paramita S, Toruan VML. Comparison of Melanin Index Before and After Using Facial Serum Based on Propolis and Stingless Bee Honey from East Kalimantan: Perbandingan Indeks Melanin Sebelum Dan Sesudah Penggunaan Serum Wajah Berbasis Propolis Dan Madu Kelulut Lebah Tanpa Sengat Asal Kalimantan Timur. J Riseta Naturafarm [Internet]. 2026 Mar. 5 [cited 2026 Apr. 22];3(1):30-5. Available from: https://jrn.b-creta.com/index.php/jrn/article/view/27