1. The mildew of the eye shadow disk may be caused by the humid environment, and the mold is easy to grow under the humid conditions.
2. The eye shadow disk is not properly used or stored after opening. If the finger is frequently touched or the lid is not tightly closed, mold may also be introduced.
3. The quality of eye shadow disk itself is poor or its shelf life has expired, its antiseptic ability is reduced, and it is also easy to cause mildew.