The bath towel—that faithful daily companion we use right after a shower, at the very moment we are cleanest. So why worry about its hygiene?
However, a compilation of studies by the International Scientific Forum on Home Hygiene, reported by *Allo Docteurs*, offers a nuanced answer. In the warm, humid environment of a bathroom, bacteria proliferate more easily, and towels actively contribute to their spread. The studies identified several concerning bacteria on bath towels, including *Escherichia coli*—which poses particular risks for children and the elderly—and *Staphylococcus aureus*, which can, in rare cases, lead to serious complications. It is a picture that might make one think twice about reusing a towel indefinitely.
But that is not the whole story, and this is where expert opinion offers reassurance. According to Dr. Stéphane Gayet, an infectious disease specialist and hygiene expert, washing your towel once a week is more than sufficient in the vast majority of cases. The reason is simple: the skin itself acts as a natural barrier against an external environment that is never completely sterile anyway. There is no need to give in to an obsession with daily washing; the weekly routine—widely endorsed by specialists—remains the standard for everyday use and healthy skin.

What this task actually entails

Changing bath towels involves replacing the used towel with a clean one and putting the old one in the wash. Allow about five minutes for this simple task, which is generally performed once a week for a typical household—or more frequently in cases of sensitive skin, eczema, or after intense physical activity.

Tips for limiting bacterial growth

Drying the towel between uses is the single most important step: hanging it in a well-ventilated area—rather than leaving it bunched up on a closed rack or on the floor—significantly speeds up drying time. This effectively curbs bacterial growth, which thrives on lingering moisture.
Using separate towels for your body and face prevents cross-contamination—a crucial detail for those with acne-prone or easily irritated skin. As for washing, using a temperature of at least 60°C effectively eliminates most accumulated bacteria and germs; low-temperature washes, by contrast, tend to leave more organic residue in the fibers.
For individuals with sensitive skin or eczema, changing towels more frequently—or even daily, as recommended by Dr. Gayet—reduces the risk of secondary infections and complications like impetigo, especially when the skin barrier is already compromised.

There is no need to panic about the bacteria lurking in your bath towels; according to hygiene experts, a weekly wash is perfectly adequate for most households. The real game-changer isn't how often you wash them, but rather how well you dry them between uses.