How long can a disposable mask be used?

In a medical setting, disposable masks are generally recommended for use up to 4 hours and should not exceed 6 hours. However, in a home environment where the mask is worn for shorter durations and not exposed to high levels of bacteria or pathogens, it may be properly stored and reused. In such cases, ensure the inner surface of the mask remains clean and hygienic during storage, avoiding contamination by dirt or other contaminants.