Why and How to Check the pH of Soap & How to Neutralize ...
Sep 30, 2019·Using borax or boric acid to neutralize liquid soap. ... Borax can still be bought from soap making suppliers and other online stores, though. To neutralize with borax, dissolve 2 parts borax to 3 parts water. So, for example, you could dissolve 2 ounces of borax in 3 ounces of water. Many people say that you should add it when the soap is warm ...