Using a Sharpie permanent marker, I usually write the address right across his forehead.
Well, you can take a sharp marker (preferbably a Sharpie marker) and write whatever you want on your photo.
Permanent Marker
There is no marker that can be used to write on candles. However, markers can be used to write on certain papers which are then wrapped around decorative candles.
You can just wash it off in the bath or shower.
Yes, you can..
no it can give you cancer
get a expo marker and a plastic sheet
Yes
no
LCD computer monitor screens.
Possibly. Please don't do that.