Developed divot after receiving steroid in forehead. What will get rid of this deep forehead divot? (Photo)

I have a sad story about a forehead divot that started from a milia being removed; that didn't heal well and the Dr. injected Silikon 5000 which caused a raised bump that looked awful. then I went to a big university hospital and they put steroid in it which created an awful looking divot I have had for over 1 year. I don't know what to do b/c fillers are risky in that area... Any ideas to lessen the huge divot?