Diode Laser injin kawar da gashi yana aiki ta hanyar kai hari ga melanin a cikin ƙwayar gashi. Laser yana fitar da hasken haske mai ƙarfi wanda melanin ke ɗauka a cikin kullin gashi, yana haifar da lalacewa. Laser diode yana kai hari ga follicle ɗin gashi kawai ba fata da ke kewaye ba.
Laser diode yana da babban ƙarfin wutar lantarki, wanda ke nufin cewa yana iya kaiwa ga yawan gashi a lokaci ɗaya, yana mai da shi saurin kawar da gashin gashi. Babban ɗan gajeren lokacin bugun bugun jini na laser diode yana tabbatar da cewa follicle ɗin gashi kawai aka yi niyya, yana rage haɗarin ƙonewa ko lalata fata da ke kewaye.