A lot of people who suffer from allergies have sensitive skin, so materials like cotton not only guard your pillow against dust mites but will also not irritate your skin.
See the label for what the size of the pore is. Dust mites have a lower chance to pass through a smaller the pore size. Consumer Reports recommends that pores should not be larger than six micrometers. Also known as microns, this is the preferred size.
Additionally, you should look for cases of pillows which have been evaluated by the Asthma and Allergy Foundation of America (AAFA). These labels may have the AAFA logo and say “Meets Certification Standards,” or “Certified as Asthma and Allergy Friendly.” This means that the pillowcase blocks 99% of allergens in the initial wash and about 95% during the first 18 wash cycles.
It is recommended to wash pillows in hot water once per week to rid them of allergens. The pillows should be replaced if they exhibit any indications of wear or tear or if symptoms or asthma flare up. 4eda9x6424.