I love foamy hand soap. I just found out that you can make it yourself!! Since it is more expensive, I don't usually buy it.
First, you're going to have to buy the foamy soap so you can save the bottle (you need the nozzle for the foam).
Next, you'll need your regular liquid dish soap or liquid hand soap. In the empty foamy bottle, combine 1-2 Tablespoons of dish soap and fill the rest of the bottle up with water (leave a little space at the top). Shake it slightly, not too much or it will overflow.