! ! ! Potentially scary ! ! ! Stare between your eyes reflections. An illusion called Troxler's fading will become noticeable after 10-30 seconds. It makes some unchanging parts of your vision that you're not focusing fade away, causing your reflections face to apparently morph. https://en.wikipedia.org/wiki/Troxler's_fading Also, I don't think a mirror intended for demonstrating this effect has any official name yet, so let's utilize that and start calling them Troxler mirrors. This also works in real life with real mirrors and dimmed lights or curtains. It might be scarier.
