Had to post before bed or it would keep me wondering all night.
Was at costco when I saw a huge jug of soybean oil for about seventy five cents a quart and jumped on it remembering only that soybean oil is something people use as a stretcher oil. Well I get home and start doing my research on it and linoleic acid rears its ugly polyunsaturated head
. I wrangled with it before following an online recipie for Canolive soap that had 42% Canola (DOS galore), and soybean oil has at least TWICE the linoleic acid content as Canola. Right now my base recipie has 20% Coconut, 15% Palm, 3% Castor, and the rest is Olive. I want something to cut the olive with to cut costs, and I thought soybean would be great, but now I'm not so sure. I superfat at 8% and so far so good.
Here's the big question. Does superfatting contribute to ones chance for DOS? Since the whole Carbon Hydrogen chain with those troublesome double bonds is not what the lye attacks, but rather the glycerine end of things, part of me wants to think that how much you superfat shouldn't have an influence on whether you get DOS. On the other hand, oil sitting around, especially exposed to air, is going to go rancid faster than soap on the shelf, right? I'm thinking of testing the variable of how much soy I add, say a 15% and a 30% batch, but should I also be testing for superfat? I like the feel of my 8% superfat as I have dry skin. Would I have to sacrifice that to sneak in a short lived oil? Any advice to help me direct my testing would be greatly apreciated, thanks in advance!
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