Hi there, maybe a daft question, but I have been out of this for a while and I am setting up from home, and want to offer waxing. I need to purchase a warm wax heater and wax. A lot of people on here like Perron Rigot, but can I use their 1litre tins directly in a normal wax heater, or do I need to pour it in...? Many thanks for any advice....