I'm considering forehead fillers for the first time. How are the results?

After carefully examining the bone structure and skin thickness of my forehead, they suggested that getting forehead fillers to naturally add volume would make my impression much softer and more three-dimensional.

Since the material is injected directly onto the bone, I am worried that my forehead might look too artificially protruding or that the boundaries might become uneven after the procedure. I am wondering if, after getting forehead fillers, the entire forehead will become plump and if a dull headache or heavy swelling will persist above the eyebrows or between the eyebrows for a few days. I feel like I will have to be careful even when washing my hair or face, and I am nervous that it might interfere with my daily life.

By any chance, are there any people here who have had their forehead beautifully filled with fillers at a dermatology clinic, paying for it themselves?