How to Make Liquid Soap From Bar Soap - The Spruce Crafts
Take a typical 4-ounce bar of soap and grate or finely chop it up by hand or food processor to make the soap flakes. For one bar of soap flakes, you'll need to boil a half gallon (64 fluid ounces or eight cups) of water. Put the grated or chopped soap into a large bowl that will be specifically used for making the mixture.