SetiawanD.; YestiY.; RahmadasmiN.; FitrianiO.; AndikaM.; HasanahR.; .AHA.; WulandariD.; PutriN. Preparation And Evaluation Of Hydrogel From Super Red Dragon Fruit Skin Extract (Selenicereus costaricensis). JPK : Jurnal Proteksi Kesehatan, v. 13, n. 2, p. 185-192, 8 jan. 2025.