You're Washing These 9 Things Too Much and Ignoring 9 Others Completely
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8. Duvet vs. pillow

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Pillows can rapidly collect natural oils, hair particles, and accumulated dirt, making them an ideal breeding ground for harmful fungi and microscopic dust mites. Clean pillows every three months without fail, especially if you use protective covers, which should be washed at least monthly for optimal hygiene.
Duvets, protected by covers and less directly exposed to skin contact, only require washing approximately every six months. This careful interval keeps them fresh and clean while effectively maintaining their superior quality.
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