All of G95’s gear is designed to be cleaned and reused several times. The frequency with which you should wash it is determined by the circumstances you’re using it in, your exposure to those conditions, and the amount of time you’ve been exposed to them, all of which are mixed with your personal choice. If you’re only doing errands around town and aren’t in high-exposure scenarios, every few days or so should suffice. It is advised that you wash your gear after being in an area with a lot of air pollution or smoke from wildfires, or if you decide to attend a protest, political rally, or sporting event with a lot of people.