I just do mine at home with permanent dye. After 20 years I finally figured out how to do it without destroying the bathroom.
I have a mane now, and I don't want the hassle of visiting a hair dresser every 3 months. Just trim the ends myself. Again, good enough at it now to not have to need help. With beard care and haircare a necessity, one can end up being pretty good at the whole self-hair dressing thing.