no it can give you cancer
You can just wash it off in the bath or shower.
Possibly. Please don't do that.
No.
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.
Russell Earl Marker died in 1995.
Gus Marker died on 1997-10-07.
no
Yes, you can..
get a expo marker and a plastic sheet