How do you get rust off hockey masks?

Unfortunately, You will not be able to remove the rust from a mask unless you use a chemical product, and it is recommended that you don't use chemicals on a face mask as you will then inhale the chemicals while wearing it. The best option is to buy a newface mask, try to stay away from the 2006-2008 Nike/Bauer face masks as they were prone for rusting. Once you get a new mask, air it out after each game and use a towel to dry it to prevent rusting.