PUTRI HELDIN, S. S. et al. Formulasi, Karakterisasi dan Uji Aktivitas Inhibisi Tirosinase Sediaan Nanoserum Kombinasi Ekstrak Daun Teh Hijau (Camellia sinensis L.)-Astaxanthin: Formulation, Characterization and Tyrosinase Inhibitory Activity Test of Nanoserum Preparation Combination of Green Tea Leaf Extract (Camellia sinensis L.)-Astaxanthin. Jurnal Sains dan Kesehatan, v. 7, n. 2, p. 132–142, 29 May2026.