Is Cornstarch bad if used too much on masks?

Hi Everyone.

Just like the title asks, is it a bad thing to use cornstarch on masks too often, especially latex ones? My mask collection is not very big by any means but I have one mask I have had since 2008 and have never tried it on once. I usually handle it by the neck with gloves and dust the inside of it every few years with cornstarch before putting it back into its glass case and into the darkness once again in my closet. This mask has rarely seen any light.

thats totally fine, thats only to reduce moisture from wearing it but you never worn it/tried it on