Imyenda yo kurangiza ni imiti ya reagent yo kurangiza imyenda. Bitewe nuko hari ubwoko bwinshi, birasabwa guhitamo ubwoko bukurikije ibisabwa hamwe n amanota yo kurangiza imiti. Mugihe cyo gutunganya, ibintu bike bya molekulari yo kurangiza ni igisubizo, mugihe urwego rwo hejuru rwa molekuline irangiza ahanini ni emulion. Hamwe nogukora kurangiza, UV ikurura, ibara ryihuta ryamabara hamwe nabandi bafasha nabo basabwa mugihe cyo gukora.