Putri MK, Dellima BREM. Formulasi Sleeping Mask Gel Ekstrak Kulit Buah Kopi Beserta Penentuan Kadar Fenol Total, Kafein dan Aktivitas Antioksidannya: Formulation of Sleeping Mask Gel Coffee Peel Extract and Determination of Total Phenol Content, Caffeine Content and Antioxidant Activity. J. Sains Kes. [Internet]. 2024 Oct. 31 [cited 2025 Jun. 14];6(5):708-1. Available from: https://jsk.jurnalfamul.com/index.php/jsk/article/view/2399