Garden Gives Me Joy
Well-Known Member
I just started using 1% ppo citric acid to reduce the likelihood of soap scum and rancidity. Of course, since 10g citric acid neutralizes 6g of NaOH, I counteract this addition of citric acid with an excess of NaOH.
My impression is that many soapers use 1 to 2% citric acid for bars as a matter of course, even despite not having any foreseeable risks.
What about when multiple triggrs of rancidity exist in combination (like brine soaps, hard showering water and lack of control over storage temperatures)? Until what percentage can or should soapers add citric acid (along with the NaOH excess) without hurting soap?
My impression is that many soapers use 1 to 2% citric acid for bars as a matter of course, even despite not having any foreseeable risks.
What about when multiple triggrs of rancidity exist in combination (like brine soaps, hard showering water and lack of control over storage temperatures)? Until what percentage can or should soapers add citric acid (along with the NaOH excess) without hurting soap?