One staple in many people's bathing routines is the loofah. There's something uniquely satisfying about lathering up your favourite shower gel and working it into a rich, fragrant foam.

This puts the fun in fungus. A Reddit user has gone viral on the social media platform after sharing a veritable science experiment involving a “sponge-looking” growth in her bathroom shower.

If you’ve been using a synthetic or natural loofah, it might be time for an upgrade — preferably to something that doesn’t harbor loads of bacteria, according to dermatologists. Although ...