Pasi pemamiriro akakosha, kupfeka uye pendi senge pendi yekunze, pendi, pendi yemota, zvaizokurumidza kuita maitiro ekukwegura, mushure mekuratidzwa kwenguva refu kune ultraviolet radiation, kureruka kuchembera, mweya unopisa.
Nzira inoshanda kwazvo yekukwiridzira mamiriro ekunze ekudzivirira emamiriro ekunze ndeyekuwedzera antioxidant uye yakajeka stabilizer, iyo inogona kunyatso kudzivirira iyo yemahara radicals oxidation mupurasitiki resini, kuora kwehydrogen peroxide, uye kutora mahara radicals, kuitira kuti ipe inogara-kwenguva refu kudzivirira epurasitiki nebwe, uye kunonoka zvikuru kurasikirwa Gloss, yellowing uye pulverization kuti unhani.