Textile Safety Does 100% polyester contain formaldehyde? June 3, 2026 by Mercier | Leave a Comment No, 100% polyester fabric does not inherently contain formaldehyde. Formaldehyde is a chemical often used in textile finishing processes to prevent wrinkles and improve durability, but it is not a component of polyester itself. The presence of formaldehyde depends on how the fabric is treated after its production. Understanding Polyester and Formaldehyde in Textiles Polyester […] Read more ยป