Call them loofah or luffa, these sponges are popular shower accessories that have been around for a long time. Though they look like some kind of hard plastic mesh, these sponges are actually all-natural! And no, they aren’t made of sea sponge or dried coral. They actually come from a gourd in the cucumber family. They are used to exfoliate and cleanse your skin while stimulating blood circulation as you bathe š
Check out this video by Insider about how these sponges are made 
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