Hi, jennyr. We would like to confirm that no fiberglass is used in the manufacturing process of our wipes and encourage you to reference our Wipes FAQs found on our Huggies website. In rare occasions the manufacturing process can cause tiny particles of microfiber to form on the wipe that can be felt and may reflect the light, but do not present a safety risk. Should you have additional questions or concerns, our Consumer Care Team would be happy to help. You can reach us online or at 1-877-648-2484 (Monday through Friday, 7:30 am - 7:00 pm Central Time). Thanks for the review.