I-Optical brightener ifunxa ukukhanya kwe-UV kwaye iphinde ikhuphe la mandla kuluhlu olubonakalayo njengokukhanya kweblue violet, ngaloo ndlela ivelisa isiphumo sobumhlophe kwiipholima.Ngaloo ndlela inokusetyenziswa ngokubanzi kwiPVC, PP, PE, EVA, iiplastiki zobunjineli kunye nezinye iiplastiki zomgangatho ophezulu.