How often you should wash your bath towel, according to a microbiologist — and what happens when you don’t It’s more often than you’d think. The uncomfortable truth about how often you should wash your bath towel Bathrooms become spa retreats with the right combination of organic cotton towels, bath rugs, shower curtains, and natural skincare. Organic farming and mindful manufacturing lead to lush, absorbent bath towels and cozy robes to get wrapped up in. How often should you change your bedsheets, towels, pyjamas and underwear? All these life staples can harbour some real nasties but when and how should we be washing them? Asking yourself how often should I clean something will save you time so you can spend less time cleaning and more time doing the things you love! .