 The paper discusses the use of synomorium coxinium peels extract for cotton fibers dying without mordants, analysing its properties using UV visible, FTIR spectroscopy, TPC, and TFC. The study examines the effect of pH, temperature, extract concentration, and time contact on dying performance, with optimal conditions being pH equals 5.5, T equals 72.5 degrees Celsius, extract concentration equals 0.275 percent, and dying duration equals 25 minutes. The study also shows that increasing the electrolyte NaCl can improve color strength. The results show excellent textile dying characteristics with uniform morphology as proved by SEM analysis, and good fastness to washing, perspiration, and rubbing. This article was authored by now HRSA Bayer, Marjib Jabli, Hainan Ghanmi, and others.