Silfi Indrian, Alfi Asben, Kurnia Harlina Dewi. Implementation of Quality Function Deployment (QFD) in Product Development of Jicama Starch-Coriander Leaf Extract Peel-off Gel Mask. IJSBAR. 2025;78(1):1-19. Accessed January 1, 2026. https://www.gssrr.org/JournalOfBasicAndApplied/article/view/17553