Stan pH neutral in the context of cosmetics is a wide ranging term. There`s pH neutral which technically as we know is exactly pH 7, the pH of distilled water.
Then there`s "pH neutral to the skin" which isn`t exactly pH neutral but slightly acidic to match the pH of healthy human skin. It`s usually around pH 5-5,5.
Now let`s not talk about the FDA`s definition of soap like Ivory. It`s clear that soap by definition mustn`t contain any man made surfactants.
Again a Real Syndet by definition of the cosmetics industry, not sure about trade laws, such as a Eucerin or Sebamed bar (you know these niche brands in the USA, too ?) is pH neutral to the skin (acidic) and does not contain any real soap. There might be fatty acids in those products to give them texture but those are not saponified as in hybrids.
Then there`s hybrids or combinationbars (did anyone care to read the links in previous post?) like Dove which are usually just called syndets or detergent bars to make things not too complicated for consumers, but strictly speaking they aren`t because of their soap content. Looks like the term syndet is not as clearly regulated as the term soap is. According to Launderess` link to the patents of Dove it is pH neutral but not exactly "neutral to the skin" at a pH of 6,8-7,2. This doesn`t surprise me because otherwise the soap content wouldn`t stay soap for a long time if Dove were more acidic like a pure syndet would be.
Vintage Zest, another hybrid (1990s vintage is what I know personally) is different again, I can tell this from the ingredients list. It is just soap with a man made sufactant added to prevent the formation of soap scum. I bet my house and farm it is just as alkaline in pH as ordinary soap is (around pH 10 ?). Of course it can`t be called soap by trade laws.
Just think of shaving cream when you think of Zest. There`s usually a surfactant added as well to keep razor blades clean on contact with hard water minerals, but it is still high in pH to soften the beard easily.
Launderess, my reference to Baby Jane was stupid and not clear enough. Non of us makes a good crazy sadistic Jane or a poor pathetic Blanche.
I was only thinking of those two diehard divas. But I very much prefer to be challenged over being surrounded only by people who say what I want to hear.
On the other hand my primary motivation to post here is because it`s fun to do so. No intention to receive a doctor`s degree.
Then there`s "pH neutral to the skin" which isn`t exactly pH neutral but slightly acidic to match the pH of healthy human skin. It`s usually around pH 5-5,5.
Now let`s not talk about the FDA`s definition of soap like Ivory. It`s clear that soap by definition mustn`t contain any man made surfactants.
Again a Real Syndet by definition of the cosmetics industry, not sure about trade laws, such as a Eucerin or Sebamed bar (you know these niche brands in the USA, too ?) is pH neutral to the skin (acidic) and does not contain any real soap. There might be fatty acids in those products to give them texture but those are not saponified as in hybrids.
Then there`s hybrids or combinationbars (did anyone care to read the links in previous post?) like Dove which are usually just called syndets or detergent bars to make things not too complicated for consumers, but strictly speaking they aren`t because of their soap content. Looks like the term syndet is not as clearly regulated as the term soap is. According to Launderess` link to the patents of Dove it is pH neutral but not exactly "neutral to the skin" at a pH of 6,8-7,2. This doesn`t surprise me because otherwise the soap content wouldn`t stay soap for a long time if Dove were more acidic like a pure syndet would be.
Vintage Zest, another hybrid (1990s vintage is what I know personally) is different again, I can tell this from the ingredients list. It is just soap with a man made sufactant added to prevent the formation of soap scum. I bet my house and farm it is just as alkaline in pH as ordinary soap is (around pH 10 ?). Of course it can`t be called soap by trade laws.
Just think of shaving cream when you think of Zest. There`s usually a surfactant added as well to keep razor blades clean on contact with hard water minerals, but it is still high in pH to soften the beard easily.
Launderess, my reference to Baby Jane was stupid and not clear enough. Non of us makes a good crazy sadistic Jane or a poor pathetic Blanche.
I was only thinking of those two diehard divas. But I very much prefer to be challenged over being surrounded only by people who say what I want to hear.
On the other hand my primary motivation to post here is because it`s fun to do so. No intention to receive a doctor`s degree.
