During the night, bedding comes into contact with dead skin cells, sweat, oil, dust and other residue. According to the Cleveland Clinic, these elements can accumulate in sheets and pillows and create favourable conditions for the presence of bacteria, dust mites and other microscopic organisms. Although they are placed one on top of the other, the recommended frequency for pillowcases and pillows is quite different.
In the case of pillowcases, the recommendation is to wash them weekly, along with the rest of the sheets. The Better Health Channel, a health information service of the Australian state of Victoria, states that this practice helps reduce exposure to house dust mites. The reason for this frequency is related to the direct and prolonged contact of the face and hair with the pillowcase during several hours.
Pillows, on the other hand, do not need to be washed weekly. The Cleveland Clinic advises that they should be washed at least every few months to limit the buildup of germs and other microscopic organisms. The exact frequency may vary depending on the material, so it is important to always check the label and the manufacturer's washing instructions before putting them in the machine.
To reduce exposure to dust mites, the Better Health Channel recommends washing sheets and pillowcases in hot water, whenever the fabric allows, citing temperatures above 60°C as an effective measure. However, not all materials tolerate the same type of washing. People who suffer from dust mite allergies may need a more rigorous routine and should follow specific recommendations from healthcare professionals.
