Hi Priya, How do I do it ? - during all your session you must keep on your desk a can with molten wax at the maximum temperature you can - in this can you put your nozzle, that wil thus become very hot - then you whisk you wax mix - when your mix is ready you pick up the nozzle from the can and place it in your icing bag - you fill in the bag with your wax mix. - then, before using the icing bag you dip the nozzle in the can for a few seconds - then you can use your icing bag during several seconds because your nozzle is very hot - when the wax in the nozzle gets too cold again dip it again in the can as above...and you can go on This is a professional method. Good luck !