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- #17
Pete said:Here is another one. Erasmic sticks were reformulated about a year ago and the opinion of most users is that the new soap is a terrible performer compared to the old. Any clue from the ingredients? (old formula on the left)
Pete said:Thanks Henk, more good info.
Another puzzle for me is the Culmak soap. Many people have said it is the same soap as the Truefitt & Hill so I got a cake of the much cheaper Culmak to compare it. They are wrapped the same, look the same, weigh the same and smell the same. After using both I would say the T&H is better but not by much.
On examining the ingredients I got this
Culmak:
potassium stearate, sodium stearate, potassium cocoate, aqua, sodium cocoate, glycerine, paraffinum liquidum, parfum, tetrasodium EDTA, pentasodium penetate, tetrasodium etidronate, CI77891
T&H:
sodium palmate, potassium palmate, sodium palm kernelate, aqua, glycerin, potassium palm kernelate, stearic acid, parfum, paraffinum liquidum, isopropyl myristate, tetrasodium EDTA, sodium chloride, bht, tetrasodium etrioronate, pentasodium pentetate, CI77891
Audiolab said:I found this page listing ingredients for quite a few soaps for anyone interested.
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henkverhaar said:Oh, and to briefly tackle a common misconception among new agers, greens, and other traditional soap lovers: NO, fatty acid soaps are not better, or milder for the skin than synthetic products. Most synthetic detergents approved for skin contact are much more gentle than fatty acid salt soaps with their pH of 9.5 to 10. Most home soapers don't know much about either chemistry or toxicology, and even if they did, they would still fall for the 'traditional is always better' ruse.
soapalchemist said:P.S. If anyone is wondering about H's strange silence since I posted last, we have been busily PMing since. We will no doubt have to continue to 'agree to disagree' about the necessity of adding synthetic ingredients to soap, but all is well and we are the best of friends.
Audiolab said:Hi Henk,
Do you know what role heat plays in the lather (if any)? I know I can get a good lather mixed cold but I also know my face prefers hot lather and somehow it seems to reduce friction. Perhaps this is affecting the skin more than the lather, but wondered if heating the lather is good, bad or makes no difference.
I know from experience that too much heat seems to destroy lather but does a low heat have any ill effects on lather?
henkverhaar said:b] cold water dissolves less fatty acid salts and it is therefore more difficult to make a good lather with cold water -- solubility is what makes potassium salts superior latherers over sodium salts
Audiolab said:Sorry HM are you speaking Gaelic? or is this the result of spending too much time with soapmakers?
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