N'iji mmetụta mgbawa nke Nd: YAG Laser, ọkụ laser na-agafe na epidermis n'ime dermis ma na-emetụta oke pigmenti.A na-etinye ike laser site na pigmenti.Ebe ọ bụ na laser usu obosara bụ nnọọ mkpụmkpụ na nanosecond na-abịa na ibu elu ume, na pigmenti uka ga-aza ngwa ngwa na-agbaji n'ime obere iberibe, nke a ga-ekpochapụ site ahu mgbasa usoro.Mgbe ahụ pigmenti na-aghọ ọkụ nke nta nke nta wee pụọ n'ikpeazụ.