I dont know hoe they make it but I know that the ingredients are a very non-high tech mixture of 70% water, 20% stearinic acid, 10% glycerine with traces of colouring, antioxidants (to keep the _cream_ fresh, it was never meant for your skin) and perfume.
When I repair my mothers cabin roof, I often use a special "vanishing cream" of asphalt, sand and some sort of tar, same trick, much more useful