Any non invasive methods to contour a sloped forehead? (Photo)

Hi, I'm a female (although it's hard to tell from my forehead!) with a masculine slope. I'm wondering what non invasive options are to soften this angle to give a softer, feminine appearance. It doesn't help my forehead is wide to boot. Please don't suggest bangs. I have curly thin hair, so aside from wearing a hat, there's no way to camouflage this. I've heard fillers like Sculptra work but wondering approx cost since this is such an expansive area. How long would such a filler last? Ty in advance.