Free Magic Trick - Light A Used Match

You take out a box of matches and go to light one of them but when you open the box they are all used.

You then proceed to take out the used match and strike it and it lights. You can have them already stashed in the dirty ashtray and take one out and then light the match.

The secret of this free magic trick is:

All you have to do to make a match look like it has been used is dip the match in black ink, and then wait for it to dry. Then dip it in ash and it will look like a used match but when you strike it the match will light like any normal match.