5. I keep my cleansing puff in the shower. Does it matter if it never fully dries out between uses?
Yes. Moisture that lingers in a puff can be a breeding ground for bacteria. So after rinsing it, let it dry completely by taking it out of the shower and hanging it on a hook. Or, if you are extremely motivated, microwave it for 30 seconds between uses, says Leslie Baumann, a dermatologist in Miami Beach, Florida.