A wrinkle, is a fold, ridge or crease in clothes or garments. Sometimes wrinkles are intentionally added to create a “look” but more often wrinkles are not desired and fabrics are treated to become “wrinkle-free”.
In both cases chemical finishing techniques are applied to the fibers or fabrics.
https://www.productip.com/kb/productipedia/compliance-resources/wrinkle-finishing-of-textiles
