If you shower and clean yourself with a loofah, it is probably time to reconsider your bath routine. Because of the wet atmosphere, the handheld spongy scrubber is easy to remove debris from your skin as well as to breed bacteria. How weird right? Which is why, you should, after each use, rinse it thoroughly and set it aside to dry in a cool space. After 3 to 4 weeks, it is highly recommended replacing it with a new one, as the amount of bacteria on the loofah can be more overpowering.