Iri doro keg , chigadziko chekurongedza chakagadzirwa kubva kumusoro-chipingamupinyi chinoshanda zvinhu, chinopa chengetedzo yakanakisa. Inovharisa mweya wekunze nemwaranzi yeUV, ichichengetedza kutsva kwedoro kwenguva yakareba. Kunyangwe mushure mekuzadza, chero bedzi inoramba isina kuvhurwa, doro rinoramba riri mumamiriro ekutanga.