How does foaming hand wash foam?

What is so special about whats in the bottle or is it the pump action on the bottle that makes it foam?How does foaming hand wash foam?
According to Dial, ';the instant foam is created by dispensing Dial Complete庐 through the special, foaming pump head.'; They also say that the soap is thinner than regular handsoaps, so I guess it is a combination of the soap and the pump.How does foaming hand wash foam?
I'll have to ask my wife.
It's the pump on the bottle. So when you buy one (just because they're so much darn fun!), you can re-fill it


yourself with whatever kind of soap you like. --Just be


sure a dilute the soap WAY down. If it's too soapy, it'll


clog the pump and make it stick. Then it's heck to get


it washed out enough to loosen up again. Can you tell


I've ';been there done that';???