Hmmm...now where have I heard that before!
:wink:
We're not nuts. Everyone else is! :wink:
I had to educate my family about the lye thing when I first started out, too. After I had explained and gave them backup scientific proof (even a simple definition of 'soap' in the dictionary will do nicely) they settled down and now happily use my soaps.
It's funny how we have all been brainwashed throughout the years by the commercial industry. I used to think the same way as your wife does, but back then I really can't say that I actually knew anything about soap or how it was made. I just 'knew' it couldn't be good because all I'd ever heard was the bad press from the media rumor mill (Gasp! Commercials would never lie or bend the truth, would they?!
). Sadly, I had never checked things out for myself.
According to the FDA website, not all products labeled as soap meet the FDA definition of soap. The FDA defines soap as thus: "The bulk of the nonvolatile matter in the product consists of an
alkali salt of fatty acids and the product's detergent properties are due to the
alkali-fatty acid compounds." (underlining done by me)
The only way to create an "alkali salt of fatty acids" is by mixing fats/oils with a strong alkali, such as lye- either in sodium hydroxide or potassium hydroxide form. Doing so creates a compound that is a completely different entity than the parts that went into it- i.e. soap. Plain and simple chemistry.
Although you will probably never see the term 'lye' used on the label ingredients in a commercial bar of soap, you can let your wife know that lye was definitely ustilized in its manufacture whenever she sees such terms on the label as "Sodium Cocoate" or "Sodium Olivate" or Sodium Palm Kernelate", etc..". Sodium Cocoate basically means coconut oil that has been saponified (chemically changed into soap) via the use of some kind of lye. The same with the others, only olive oil and palm kernel oil were used as the fat portion along with the lye.
I don't know if your wife likes to use Dove for sensitive skin, but if so, you can let her know it contains soap made with lye and tallow (an animal fat!), palm oil, coconut oil and palm kernel oil. Here are its ingredients (bolding mine):
Sodium Lauroyl Isethionate , Stearic Acid ,
Sodium Tallowate ,
Sodium Palmitate , Lauric Acid , Sodium Isethionate , Water , Sodium Stearate , Cocamidopropyl Betaine ,
Sodium Cocoate ,
Sodium Palm Kernelate , Sodium Chloride , Tetrasodium EDTA , Tetrasodium Etidronate , Maltol , Titanium Dioxide.
It's pretty much the same with many other popular commercial soaps on the market, too. We get tripped up by the fact that 'lye' insn't specifically named, but there's more than one way to label lye.
Properly made soap (and I stress
properly) is just that- soap. There's no more lye present in it- its been chemically changed into a harmless akali salt of a fatty acid (soap).
Having said that, it
is possible to make a lye heavy soap, but only if one does not formulate, weigh and/or calculate properly. With all the modern tools available to the modern handmade soaper, though, it's a rare occurance. I've only ever had it happen to me once in my almost 4 years of soaping. It happened to me early on by my having calculated too daringly low of a superfat (my bad). Nobody got hurt, though, because I threw the batch out after doing a very simple zap test (very important to do for every batch no matter how careful one is is measuring, weighing and formulating). Also- the reason why so many people cite how 'great great grandma's' handmade lye soap was lye heavy and burned was because 'great great grandma' wasn't using the stable, factory-made, standardized lye as we do today. Hers was made from wood ashes which could be very unpredictable. Today's factory-made lye is very different and very predictable.
If she's still skittish about lye you can let her know that lye is also used in the manufacture of pretzels, olives, hominy, chocolate, etc..- things we happily and safley eat without so much as a thought.
As for animal fats, I love to use animal fats in my soap. They make good, hard, white bars of soap. I make all-veggie bars, too. It's all good, if you ask me. When I use my animal fat bars, I'm not rubbing lard or tallow all over me, I'm rubbing soap!
IrishLass