Need help with glare on a photo

[Coleen]

Hello everyone. I haven't been on in a long time - but I recently took a trip to visit a very good friend and took a picture of him in his car. The problem is that the glare on the car hides his face! I was messing around with the photo effect painter, to try to darken the area across his face so you can see some of it, but when I do, it LOOKS like I've edited the photo. I'm attaching a copy of the photo - can anyone tell me how to darken the glare so I can see his face in this photo? I'd really appreciate any help I can get! Thanks in Advance.
Edited to add, I am using Xara Design Pro X - thanks!