I can't find a sealer for my granite counter tops.What is the recipe if I were to make it myself?

It's not like I can go down the street to the local Home Depot. I live in the Philippines, and I just can't find the sealer. The people that seal granite counter tops are protecting their precious recipe, that provide for their livelihood. I'm told that I can get all the ingredients from one hardware store. And since I will need to seal the counter tops twice a year, I would rather do it myself.