heat can be generated in many different ways...
i have seen steam boats powered by propane, diesel, wood, gasoline and
even pine cones..

wax melts at 132 degrees f.

it is often used as a therapy
for applying heat to injuries,
joints, etc. also as a depilatory.

and in batik is removed by ironing..

parafin is a petrleum product.
bees wax has different qualities.