If you're not in a rush, you can spray your wrinkled item and throw it in the dryer for even better results, like this reviewer did with her green tablecloth.
"Downy Wrinkle Releaser is an amazing product. It's very good at removing wrinkles. I have washable, cream-colored, heavy denim slipcovers on the sofas in my living room. I used to have to iron them after washing them, and it took forever, because the fabric is so heavy. Then, with a great deal of skepticism, I tried this product and it worked so well, I no longer bother ironing the slipcovers. I just put them on the sofas and spray them with this. I also use it on T-shirts and tank tops that are wrinkled when I forget to take them out of the dryer." —J. Hume
"I've been using this product for a few years now. It's as fabulous as all the reviewers have said, for all of the uses mentioned. However, I haven't seen or read a review that mentions my favorite use, SHEETS. I hate when I forget our cotton sheets in the dryer and pull out a wrinkled/creased top hem, almost as much as I detest ironing a sheet. I give it a little spritz and voila, smooth and wrinkle-free sheets." —Dianne Jacobs
"Wow! I can't believe that this actually works. I have a microfiber couch and man, does it create static. After lying on it for a while, I would get zapped by anything I touched. I was so upset because it was a brand-new couch. I sprayed this on my couch and almost immediately all the static went away. I also love it because it works super well on my clothing too." —Fescamilla89