I saw this technique on you tube a while ago and decided to give it a try today. Old lume is certainly something you do not want to be breathing in, so the safest way is to remove it under water. All you require is an ultrasonic cleaner, a piece of pith wood and a couple of matchsticks.
Trim the matchsticks to fit the hole in the hand and delicately press them into the centre of the hands. I find the best way is to lay the hands on the pith wood face up and then press the matchsticks into the hands. Once you have done that, press the matchsticks into the pith wood as in the pictures below.
Now take the pith wood complete with hands and float in the top of the water in the ultrasonic tank. The lume on the hands will be facing downwards as in the following pictures.
Give the hands a blast for three minutes in the tank, and all the lume will be safely removed leaving spotlessly clean hands ready for the new lume. See below.
:)