"...KOH generally is used more for soft and liquid soaps, so don't try it in your bar soap...."
Annnd here's another hard rule that's about to be bent if not broken....
While it's true KOH is normally used to make cream, shave, and liquid soaps, it most definitely can be used in bar soap as well. Just use less of it -- I'd say 10% KOH is about the max for a bar soap to prevent softness.
I use 5% KOH in soaps high in oleic acid (olive oil soap for example) or high in palmitic and stearic acids (high lard soap for example). It helps make more lather more easily without using more of the fats high in myristic and lauric acids (coconut oil for example).
Annnd here's another hard rule that's about to be bent if not broken....
While it's true KOH is normally used to make cream, shave, and liquid soaps, it most definitely can be used in bar soap as well. Just use less of it -- I'd say 10% KOH is about the max for a bar soap to prevent softness.
I use 5% KOH in soaps high in oleic acid (olive oil soap for example) or high in palmitic and stearic acids (high lard soap for example). It helps make more lather more easily without using more of the fats high in myristic and lauric acids (coconut oil for example).