I have seen sodium chloride in the LOI in some bar soaps, such as Lever 2000, Dove, Irish Spring.
What is the purpose of NaCl in bar soap?
I know that stearic acid & sodium lactate are used to HARDEN a bar.
If HARDENING is the purpose, what is the chemical reaction that's happening (since I'm not a chemist, I ask this question).
Thanks very much for any assistance!