Optical brightener imatenga kuwala kwa UV ndikutulutsanso mphamvuyi mumtundu wowoneka ngati kuwala kwa blue violet, motero kumapangitsa kuyanika kwa ma polima.Choncho ankatha ankagwiritsa ntchito PVC, PP, Pe, Eva, mapulasitiki engineering ndi mapulasitiki apamwamba kalasi.