thefarmerdaughter said:
But if they are made in a lab are they natural?
Technically, everything is is from nature and therefore can be marketed as natural. The word "natural" is over used and there isn't any regulations on what "natural" is so it can use be used legally to describe anything. That is, the FDA will ignore it when used to promote your soap. You can market your soap as 100% natural since lye is a chemical which is derived from a "natural" source - sodium chloride. Of course, sodium chloride won't saponify oils. It has to be processed by using electrolysis, etc. I'm not a chemist so I don't know the actual manufacturing process. All I know is sodium hydroxide is produced from the same mineral I like to sprinkle on mashed potatoes. Do I consider lye natural? No. I don't even consider table salt a natural product...but I consume it anyway.
I could also say soap isn't natural. It's manufactured by combining fats and an alkali base to create an exothermic chemical reaction. After saponification, there isn't any lye remaining in the soap since it's been chemically altered. Many of the oils and butters we use in soapmaking have been processed and refined. Are they still considered natural? But heck, let's not get too picky about semantics. Micas and oxides come from the earth and processed to remove potentially harmful substances, refine texture to improve usability and to achieve consistent coloration. Therefore, they are often considered "synthetic" or not natural. Also, iron oxides are added to some micas to create specific colors. Yes, they are from a "natural" source but they have been processed by people. If you think about it, almost all of the ingredients we use in soapmaking has been derived from natural sources then refined for more consistent quality and to be easier to use. An example is the different types of clay. I certainly wouldn't want to go out and dig it, dry it, remove impurities (minerals, metals, bacteria, fungi, etc) and powder it before I could use it. It is processed but it is still considered a natural product. I also buy cream from the grocery to add to batches. Is this cream natural? It's not from the original source and I didn't process it myself.
Everyone has an opinion of what "natural" is and some people have a narrower definition. Some people consider them natural, some people don't. It comes down to what
you consider "natural". If you decide micas and oxides aren't natural by your definition, then you can still state your soap is 99.9% natural since you use such a minimal amount.
I like judymoody's comment that oxides are a nice compromise. You can also check with suppliers to see if they know how the micas and oxides are processed.