[1]
N. L. Setiasih, L. Lusiana, S. Inayatullah, H. Firmansyah S., L. Widjaja, and R. Lahirin, “Oral Collagen and Glutathione Supplementation for Skin Health: A Systematic Review”, IJGHR, vol. 8, no. 6, pp. 1219–1230, Oct. 2026.