This tutorial is pretty easy. I will be using Dr. Bronner's Liquid Castile Soap in Peppermint, but you can really use any liquid soap. I prefer this soap because as a face wash it is very refreshing. Just remember that regular soap may need more dilution for the foaming action to work!
water, preferably distilled or bottled for a longer shelf life
liquid soap, any kind will do
foaming bottle, you can find them here
optional: liquid glycerin, for extra moisture
For me, it was about equal parts. It may be cloudy, but that's okay.
Shake lightly to combine then do a foam test.
Here the foam did not hold its shape well, so I added more soap.
Here the foam is just perfect!
Then if you're using glycerin add in about 10-15 drops per 2 oz. My bottle was 1.7 oz. and I added in 15 drops.
Lastly use your soap!!!! It's super bubbly and makes your hands squeaky clean.
The shelf life of this soap really depends on what soap you use because certain soaps have more preservatives than others. Just to make sure I would not keep this soap for longer than 3 weeks; to avoid wasting soap, make smaller batches frequently.
The hold of the foam also may depend on how fast you pump the bottle. So pump faster for a stronger, foamier soap pile!