- Jun 19, 2014
- Reaction score
Does using naoh change the lather in any way? Or is it just to increase the body?
Wsp, can you be a bit more specific? Are you looking at branching out to shaving creams and wondering about a mix of KOH and NaOH?
If so, what is it about the mix that appeals?
Interesting. Have you made the same recipe shaving soap, one with mixed lye and the other pure KOH? Is it the recipe of the soap itself that is well liked, and a mere chance that both lyes are used?
I have made liquid soap with dual lyes up to the 60/40 mark. There is no appreciable thickening.
I used to use dual lyes because NaOH is LOTS cheaper than KOH, and I wanted to know if it changed anything. It only changes the cost, IMHO.
I haven't used both lyes in LS making, but I have used both in cream soap and shave soap. Other soapers who have tried NaOH in their liquid soap report roughly the same thing as Susie -- the thickening is underwhelming.
I think there may be more benefit to adding a bit of KOH to a bar (NaOH) soap than vice versa. The KOH will increase the water solubility of a bar soap. If your soap is high in the low-solubility fatty acids such as stearic and palmitic -- for example a high lard, high butter, or high tallow soap -- then a small % of KOH can make this type of soap lather more easily. If I remember correctly, Sistrum, a former participant here on SMF, used about 20% KOH in her bar soap. She preferred high lard recipes, so that makes sense.
And that gets us back to why shave soap often has KOH in it. And gets me back to my perception that the various types of soaps -- bar, liquid, cream, etc. are all variations on a main theme. Each has its quirks, certainly, but they not totally separate types of soap.
I've got tons of KOH lying around, so I've been playing with liquid soap lately.