How to Make Your Own Foaming Hand Soap - LiveAbout
All you need is a bottle of liquid hand soap, water, and an empty foaming soap bottle. One 64-ounce refill bottle of liquid hand soap, which costs just a few dollars, is enough to make 128 bottles of foaming hand soap. If you're used to spending $3 for each bottle of foaming soap, that's a saving of more than $350.
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