Optical brightener OB-1 shine ingantaccen haske na gani don fiber polyester, kuma ana amfani dashi sosai a cikin ABS, PS, HIPS, PC, PP, PE, EVA, PVC mai ƙarfi da sauran robobi. Yana yana da halaye na kyau kwarai whitening sakamako, m thermal kwanciyar hankali da dai sauransu.