Glitter glasses There are two methods for curing - Bake method: after drying for 1 hour, place in cool oven. Set temp to 350 degrees F and bake for 30 min. (Glass must heat gradually) After 30 min turn the oven off. Let glass cool completely in oven. Don’t use for 72 hours. Air dry method: it will cure after 21 days and it will be dishwasher top-shelf safe!