Is polyethylene terephthalate safe to use as a pillow cover?

Yes, polyethylene terephthalate (PET) is generally considered safe for use in pillow covers. It is a commonly used synthetic fiber that is non-toxic and resistant to moisture and mildew. However, individuals with specific sensitivities or Allergies to synthetic materials may want to consider alternatives. Always check for certifications or standards, especially if the product is intended for sensitive individuals, such as children.