Towels should generally be washed after every 3 to 5 uses, or about once a week if used daily. This recommendation assumes the towels dry completely between uses to prevent bacterial growth. If towels remain damp or are used by multiple people, more frequent washing is advised. Washcloths and hand towels should be washed even more often, ideally every couple of days or after each use in the case of washcloths. Using a high temperature during washing helps eliminate bacteria effectively. Regular washing prevents the buildup of bacteria, fungi, and unpleasant odors that can cause skin issues or infections.