(1) The mask made of silicone material should not be close to high temperature and should avoid scratching by sharp objects.
(2) The mask is a consumable. After a period of use, it should be replaced in time if it is found to be oxidized and hardened or uncomfortable to use.
(3) Do not expose the mask to the sun. Ultraviolet rays will accelerate the aging and brittleness of the silicone mask, which will affect the service life.
