My days of trying (and failing) to relax wrinkles with a steaming hot shower are over. For Christmas I received the pictured Jiffy personal garment steamer. Steaming is the gentlest method for removing wrinkles from fabric. Ironing crushes and scorches the fibers of fabric; steam relaxes the fibers and causes the wrinkles to release.
Jiffy is the world's oldest manufacturer of garment steamers, having made them in United States since 1940. I received model J-2000M, the model recommended for home use. It is built like a Sherman tank with heavy brass, wood and steel. To use you simply fill the water reservoir with clear water and flip on the switch. Within two or three minutes a steady stream of steam is gushing from the metal steam head. To steam a hanging garment you lightly touch the fabric with the steam head and the wrinkles instantly vanish. I have successfully tested the steamer on wool sweaters, cotton dress shirts and tailored suits. In each case the steam quickly and gently freshened those garments. I would highly recommend a Jiffy steamer.