How often you should be washing your wigs depends on how frequently you wear them. If you wear a wig daily, washing it twice a month is sufficient to ensure hair remains bouncy and fresh-looking for as long as possible. But if you only wear a wig once in a while, a once-a-month wash will suffice. Never wash wigs more than twice in any given month, or you can risk damaging the unit and shortening its lifespan.