Preparation And Evaluation Of Hydrogel From Super Red Dragon Fruit Skin Extract (Selenicereus costaricensis). JPK : Jurnal Proteksi Kesehatan [Internet]. 2025 Jan. 8 [cited 2026 Jul. 27];13(2):185-92. Available from: https://jurnal.pkr.ac.id/index.php/JPK/article/view/947