Recent studies highlight that towels, commonly believed to be clean, can rapidly harbor bacteria even after just a single use. Professor Primrose Freestone from the University of Leicester advises washing towels after no more than twice using hot water over 60 degrees Celsius to effectively eliminate bacteria and fungi. The warm and humid bathroom environment further facilitates germ proliferation. Korean research also supports these findings, showing significant microbial growth after just one use. Experts recommend immediate washing of towels after each use and stress the importance of thoroughly drying them in a cool, dry place to prevent recontamination.