Ironing is a textile care process that utilizes controlled thermal energy and mechanical tension to temporarily reshape fabric fibers and eliminate creases. Wrinkling occurs due to the formation of internal stresses within the fiber structure when the material is bent or crumpled. The process relies on heat energy to raise the amorphous polymer structure of the fibers toward a state of increased molecular mobility. When adequate heat is applied, the momentary increased molecular kinetic energy allows the fibers to relax and realign into a straighter, lower-stress conformation. This controlled smoothing effect stabilizes the physical dimensions of the material, restoring a flatter plane through the combined action of heat transfer and gentle physical pressure.