I-UV fluorescent pigmentyona ngokwayo ayinambala, futhi ngemva kokumunca amandla okukhanya kwe-ultraviolet (uv-365nm noma i-uv-254nm), ikhulula ngokushesha amandla futhi ibonise umphumela ocacile wombala we-fluorescent.Lapho umthombo wokukhanya ususiwe, uyama ngokushesha futhi ubuyele esimweni sokuqala esingabonakali.