Putri MK, A’isyah Shafira S, Ria Erika Marita Dellima B. Variation of HPMC Concentration on The Stability of The Physical Properties of Peel Off Gel Coffee Arabica (Coffea arabica) Peel: Variasi Konsentrasi HPMC Terhadap Stabilitas Sifat Fisik Masker Gel Peel Off  Kulit Buah Kopi Arabika (Coffea arabica). J Riseta Naturafarm [Internet]. 2026 Mar. 5 [cited 2026 Apr. 22];3(1):19-2. Available from: https://jrn.b-creta.com/index.php/jrn/article/view/25