I have an old photo of my girlfriend with her cousin when they were young, wearing Christmas dresses in front of the tree, not long before they were separated to other sides of the world for decades now. The photo is itself low quality on top of the photo itself being physically beat up.

So far no model is willing to clean it up :/

There are reddit communities (I admittedly don't remember which, but could probably be found from a simple search) where people will offer their photo editing skills to touch up the photo, often for free. Could be worth trying a real human if the robots are going full HAL 9000 and telling you they can't do it.

If you are not personally offended by looking at CRAZY pornography, you could start digging into the comfyui ecosystem. It's not all porn, there are lots of pro photo-manipulators doing sfw stuff, but the community overlap with NSFW is basically borderless, so you'll probably bump into it.

However, the results the comfyui people get are lightyears ahead of any oneshot-prompt model. Either you can find someone to do cleanup for you (should be trivial, I wouldn't pay more than $10-15) or if you have good specs for inference you could learn to do it yourself.

If you have a decent GPU Qwen Edit can probably do it and certainly won’t refuse.

Keep in mind no editing model is magic and if the pixels just aren’t there for their faces it’s essentially going to be making stuff up.

Open source models like Flux Kontext or Qwen image edit wouldn't refuse, but you need to either have a sufficiently strong GPU or get one in the cloud (not difficult nor expensive with services like runpod), then set up your own processing pipeline (again, not too difficult if you use ComfyUI). Results won't be SOTA, but they shouldn't be too far off.