You might wonder, then, what makes soy so "special."  The major advantage that soybean wax has over paraffin is that its source – soybeans – can be renewed so much more quickly than paraffin's source – crude oil.  Whereas oil, a fossil fuel, takes millions of years to form, a crop of soybeans can be replanted over top of the old at least once a year.   The second advantage that wax made from soybeans has is a much closer link to the food supply.