Red Heart Double Cross by MagicSmith.
This is the FULL MagicSmith Double Cross pen, but it writes in RED ink from the front, leaves a RED HEART on the spectator's hand, and comes in a RED sharpie marker. Also, the cap at the back of the pen is RED.
Ask a spectator to hold out their hand and make a closed fist. Pull out a marker and draw a red heart on the center of your palm and close it into a fist. Now without any rubbing, erasing or funny business, you slowly open your hand and reveal your heart is COMPLETELY GONE. Now ask the spectator to open their hand - THE HEART IS ON THEIR PALM!
Ask them to try to rub away the heart - they can't! It's Sharpie ink! Tell them not to worry though - it's safe and nontoxic and can be washed away easily with soap and water.
The secret behind Double Cross is diabolically clever, and perhaps more importantly, practical. Its always inked and ready to go. There is nothing you need to make or prepare beforehand - just throw the pen in your pocket and you can perform it all night long.
Because there's no difficult sleights, you'll sail through the routine. You're so far ahead the spectators will never remember you coming near them or even touching them. The result is a unique magic effect that's self-contained, has NO reset, and can be performed surrounded. Its a table hopper's dream.
Red Heart Double Cross includes the MagicSmith designed and fabricated Double Cross Sharpie pen, accessories and complete instructions.
Red Heart Double Cross by MagicSmith