This study was carried out to investigate the effect of the Versenate PS as the peroxide bleach stabilizer in peroxide bleaching system. Currently, but, most peroxide bleach systems contain peroxide, caustic to activate the peroxide, and the use of a stabilizer such as sodium silicate to stabilize the peroxide during the actual bleaching. Therefore, to evaluate the degree to replace sodium silicate, the experiments of metal signature analysis, metal control by chelant(DTPA), caustic level optimization, and the addition of Versenate PS peroxide stabilizer were performed. The results shows that the only combination of Versenate PS and low sodium silicate provide the most effective peroxide bleaching.