As long as your threads are colour fast (test them first), I'd try rolling it in a barely damp towel and leaving for a few hours. This has worked for me, once or twice.
D.

Someone said put it into the freezer..no idea if it works. 😊

Hi, Lisa. My name is Pam and I am a stitcher on this site. Here's what I do. After I am through, I use Dawn to soak my work assuming the thread is colorfast and that's why I use DMC. I take it out of the water and thoroughly rinse in cold water then take a towel and wrap to get excess water out. I then place my work face down on the ironing board and place a white hankie (yes, a hankie) between the iron and my work and use the steam setting on my iron and press til barely damp then let dry. I quit buying material that is folded already. I either order from ECS cut or wrapped in a tube. I always take my work out of my hoop to prevent hoop marks. I am sure there are other stitchers out there that may have a certain way that they do. We don't have cross stitch police (joke) because usually everyone has a different way of doing things. My way is just trial and error. Again, I absolutely do not purchase cross stitch material that is folded and that's just me. Don't give up on your work! I really think that you can get those wrinkles out. I think, if I am interpreting correctly, that you haven't tried the damp method? Anyhow, I think you will get more tips from other stitchers. We have very kind ladies and gents on this site that can give great tips! Just don't panic-it will be ok. Welcome to our ECS stitching site. Let me know if this works or maybe another stitcher will jump in. Good luck. Peace Pam

You do have some floss left, right? Take a few strands and just put some Dawn in and see if the floss bleeds. Usually if it is DMC, it won't bleed. Is this your first project? On one of my first projects was a chicken-a big chicken. When I went to "wash" it, it bled red and I never quite got the red out. So try the floss only-with Dawn or Ivory. Let me know what happens. Let's cross our fingers.

I always iron my completed pieces while the are still damp, right side down between white towels. Don't set your iron too high or you run the risk of scorching your work. Be PATIENT - it does take time!

MK is right. But for me, the bottom layer is a very thin towel, work face down, thin white kitchen towel (I only use that towel for my cross stitch) or a hanky (depending on how large your work is). My work is almost dry then I set it aside. If you go on the net, just put in how to make your floss colorfast. It involves a couple of tablespoons of WHITE vinegar and water to make the floss colorfast. MK is right too about not scorching your project. I learned that the hard way when my mom was teaching me how to iron. Ended up with a perfect scorchmark on the left hiney forever embedded in my memory. Not one of my finest hours. Let me know if you got the wrinkles out. Peace. Pam