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Loofahs have been well-documented reservoirs of bacteria. ... If you couple the fact that the bacteria are trapped in the fibers of the
loofah and that these sponges are used to exfoliate the skin, the risk of infection is much higher. Meanwhile, our hands can be easily cleaned."
Loofah sponges aren't necessarily dangerous, but they need to be taken care of and maintained properly to avoid bacteria growth. If you love working up a lather when you're in the shower, the best thing you can do is make sure you're taking care of your sponges and other bath accessories.