The French government sparked debate earlier this year with advice suggesting sports clothes could be worn up to three times before washing. However, Australian conditions may call for more frequent laundering, according to an RMIT expert.
Dr. Carolina Quintero Rodriguez, Senior Lecturer in Fashion Enterprise, says the advice is rooted in environmental concerns, as frequent washing consumes water and energy while also degrading fabrics. But she warns that synthetic activewear, now the dominant choice for sports clothing, can harbour significant bacteria after just one wear.
“Synthetic performance wear should be washed after each use, even on a cold cycle,” Dr. Quintero Rodriguez said. “These fabrics trap moisture, creating an ideal environment for bacteria growth and odour.”
By contrast, natural fibres such as cotton accumulate fewer odour-causing bacteria, meaning they may last longer between washes. Low-intensity activities like walking or gentle yoga may also allow for more re-wears, as bacterial growth correlates with moisture levels.
Climate plays a role too, with cooler months allowing for less frequent washing. However, those with skin conditions or compromised immune systems should exercise caution when re-wearing gym gear.
