I went there after hearing that the forehead filler was painful, but it was really, really painful . I could feel it all the way to the top of my head, so I told the doctor that the stimulation was coming all the way to the top of my head, and he originally said it would go a little deeper.. Wow, that was really unpleasant, and did you hear that filler going in? I have to say, wow, it was really terrible.