Whst is the different of hybrid soap (naoh + koh) and normal (only naoh)

[Jirolu]

Whst is the different of hybrid soap (naoh + koh) and normal (only naoh)

 

[DeeAnna]

Using 5% to 10% KOH in place of some of the NaOH will increase the solubility of the soap, especially if the soap is moderate to high in stearic and palmitc acids. An example is a soap high in palm, tallow, lard or the nut butters (shea butter for example). More solubility in this type of soap means you will get more lather for less work and the lather will be more loose and bubbly.

Adding 5-10% KOH to a soap high in oleic acid may help the lather to feel less slimy.

Adding KOH to a soap that is high in lauric and myrsitic acids won't be useful. A soap high in coconut oil is an example. This type of soap is already very soluble in water, so KOH isn't all that helpful.

 

[saintalchemist]

Using 5% to 10% KOH in place of some of the NaOH will increase the solubility of the soap, especially if the soap is moderate to high in stearic and palmitc acids. An example is a soap high in palm, tallow, lard or the nut butters (shea butter for example). More solubility in this type of soap means you will get more lather for less work and the lather will be more loose and bubbly.

Adding 5-10% KOH to a soap high in oleic acid may help the lather to feel less slimy.

Adding KOH to a soap that is high in lauric and myrsitic acids won't be useful. A soap high in coconut oil is an example. This type of soap is already very soluble in water, so KOH isn't all that helpful.

What is the upper limit of adding KOH to a bar soap?

 

[DeeAnna]

What is the upper limit of adding KOH to a bar soap?

Don't know that with certainty. My guess is around 10%, however, if you want a hard bar. More KOH => increasing softness.

 

[saintalchemist]

Thanks... More KOH = more softness. I see