Sapitri, E.Y. et al. 2026. Building Customer Loyalty Through Product Differentiation And Competitor Analysis: Evidence From A Natural Cosmetics MSME. IQTISHADUNA: Jurnal Ekonomi dan Keuangan Islam. 16, 2 (Jan. 2026), 135–147. DOI:https://doi.org/10.20414/iqtishaduna.v16i2.14980.