Recently, a fellow member posted his DIY shoes. There was a link to a Youtube video where a man polishes a pair of shoes. Toward the end, he kept reaching over to what looked like a soap dispenser/pump but without nozzle pointing vertically skyward. He always brought a cloth over to it, pumped it, and went back to rubbing the shoe. What is this? Water? Some sort of chemical? Where can I buy it and which part of the polishing regiment does it come in? Thanks.