Last February I made this with 80% olive, 15% coconut and 5% castor. Already hard and works fine. No hint of DOS. I used green clay in one batch and spirulina in one. The spirulina morphed to yellow flecks. Still works well enough for me.
I had some very well cured ZNSC (over a year) and that stuff was hard as nails! No squishy outer layer, no soggy bottom.Just out of interest: I understand how hard Castile soaps can get after a nice long cure but will that hardness ever help the bar to resist water uptake & becoming mushy and bendy?
I’ve just found some soaps I made a few years ago which had 50% OO and whilst they’re really very hard they still get a soft layer all over when used on the sink, despite good drainage on a soap dish (not sitting in water)….
I make soaps with higher p&s now to avoid the soggy bottom issue but still tempted by ZNSC
100% olive oil soap (or soap that is mostly olive oil or other high-oleic fat) is always going to be highly soluble in water. And the water it absorbs is going to make a gelatinous oleic gel. These are basic properties of a high-oleic soap....will that hardness ever help the bar to resist water uptake & becoming mushy and bendy?...
Thanks DeeAnna. That makes perfect sense.100% olive oil soap (or soap that is mostly olive oil or other high-oleic fat) is always going to be highly soluble in water. And the water it absorbs is going to make a gelatinous oleic gel. These are basic properties of a high-oleic soap.
You can cure this soap until it's as dry and as physically hard as possible. That will help slow the absorption of water into the soap. That's the basis for the advice to cure this type of soap for a long time.
You can modify the soap by including salts that cause the soap molecules to "salt out" and further help it resist absorbing water. That's the basis for suggestions to add baking soda (sodium bicarbonate) and/or table salt (sodium chloride) to the soap.
But in the end you can only influence and manage how a given soap performs. You cannot permanently change its nature. If you want a soap that has different qualities, then you have to make a different soap.
DeeAnna - this has not been my experience with ZNSC - although i do make the version with 10% CO and 5% castor. Once well cured (over a year) it has no sign of oleic gel at all. I'm also using a bar presently in the hand basin that was made in July 2023 and that's pretty rock-solid too - I'm about 1/3 of the way in to that bar.100% olive oil soap (or soap that is mostly olive oil or other high-oleic fat) is always going to be highly soluble in water. And the water it absorbs is going to make a gelatinous oleic gel. These are basic properties of a high-oleic soap.
You can cure this soap until it's as dry and as physically hard as possible. That will help slow the absorption of water into the soap. That's the basis for the advice to cure this type of soap for a long time.
You can modify the soap by including salts that cause the soap molecules to "salt out" and further help it resist absorbing water. That's the basis for suggestions to add baking soda (sodium bicarbonate) and/or table salt (sodium chloride) to the soap.
But in the end you can only influence and manage how a given soap performs. You cannot permanently change its nature. If you want a soap that has different qualities, then you have to make a different soap.
Cool, only another 18 months to go, and then you can put a new bar of soap in the shower!I'm also using a bar presently in the hand basin that was made in July 2023 and that's pretty rock-solid too - I'm about 1/3 of the way in to that bar.
I'm not saying it's long lasting, just that it's not squishy!Cool, only another 18 months to go, and then you can put a new bar of soap in the shower!
That's great! Just as you experienced, warmer ingredients do help with getting to trace in less time. Still, it isn't strictly necessary for oils to match the temperature of the lye solution, or be within 10 degrees, as so many advise. That idea is not exactly a complete myth, but rather, an oversimplification of a suggested step to help new soapers.I heated the oils to 110-115ºF to match my Lye solution on my batches. Came to emulsion in decent time.
I agree there is no "perfect" soap. If you recall I hate that Recipe, it was still slimy and went dossy for me before I hit my 1 yr cure time I always used for 100% OO soap. That was using 0 superfat and even added BHT. So nope that recipe was Not for me. I definitely would not go over 1% superfat with the recipe. I went back through my notes and saw I tried a second small batch with -2 superfat and did not like it either after a long cure although it did not go dossy and did not zap. LOL, still did not like it, but then I do not like OO in my soap, it always feels sticky to me.@lenarenee
And I 100% agree with you that there is no "perfect" soap recipe - it really depends on the user. Same with soaping "rules." I like Ann Watson's soapmaking book for that reason; she debunks a lot of soaping myths.
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