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Forum LockedSodium Laureth/Laryl Sulfate dangerous ?

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Butch View Drop Down
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    Posted: January 12 2000 at 2:21am
I know that Sodium Laureth/Laryl Sulfate is a harmful cleanser in shampoos (It might cause skinirritation and hairloss). Now I wonder if anyone knows if Ammonium Laureth/Laryl Sulfate is dangerous too ?(also common in shampoos)
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Angel View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Angel Quote  Post ReplyReply Direct Link To This Post Posted: January 12 2000 at 2:21am
Butch,I saw your question and looked in my cosmetology book. It says that Sodium Laureth/Laryl Sulfate is supposed to be a mild cleansing agen with laureth bein g the milder of the two. I havent heard of the ammonium laureth sulfate. If you know where I can get information on the damaging affects of the sodium laureth/laryl sulfate please let me know. We will be studying the chapter on product chemistry in the next few weeks and it might make an interesting conversation.Thanks, Angel--cosmetology student
Angel
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Butch View Drop Down
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Hello Angel and thank you for being interested in the subject. I have a great website regarding commonly used harsh chemicals and their effects on the human body. www.nt.net/~perrier/harmful.htm Here you will find some usefull stuff. The question is: "Is Ammounium Laureth/Lauryl also dangerous?"
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Angel View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Angel Quote  Post ReplyReply Direct Link To This Post Posted: January 12 2000 at 2:22am
> Hello Angel and thank you for being interested> in the subject. I have a great website regarding> commonly used harsh chemicals and their effects> on the human body. www.nt.net/~perrier/harmful.htm> Here you will find some usefull stuff. The question> is: "Is Ammounium Laureth/Lauryl also dangerous?">Thanks for the info, I'll have to bring it up in class!Angel O:)>
Angel
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Laura Jane View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Laura Jane Quote  Post ReplyReply Direct Link To This Post Posted: January 12 2000 at 2:25am
> I know that Sodium Laureth/Laryl Sulfate is a harmful> cleanser in shampoos (It might cause skinirritation> and hairloss). Now I wonder if anyone knows if> Ammonium Laureth/Laryl Sulfate is dangerous too ?(also> common in shampoos)Sodium lauryl sulfate (more properly known as sodium dodecyl sulfate or SDS) is not harmful per se. Neither is sodium laureth sulfate. As far as their effects on the hair, ammonium lauryl sulfate and ammonium laureth sulfate are essentially identical to the corresponding sodium compounds.These compounds are all detergents. A detergent is a compound which has one hydrophilic (literally means "water-loving") end and one hydrophobic (literally means "water-fearing") end. The hydrophilic end makes the compound soluble in the water, so that it can be rinsed away. The hydrophobic end picks up oils and other similar compounds. Oils, as we all know, do not dissolve in water, and so cannot be readily rinsed away on their own. Detergents allow the easy removal of oils using water.In order to clean your hair and scalp, detergents are necessary. The key is to avoid excess, as with so many other things. Too much of a detergent can disrupt the protein structure of the hair - in fact, in the lab, we use SDS to deliberately disrupt protein structures in some of our experiments. It's a very simple, common procedure. However, unless you are using huge amounts of concentrated shampoo, it's probably not an issue.Overuse of detergents can cause drying of the skin and hair, because of the removal of the necessary oils. It is necessary to strike a happy medium - enough to remove dirt and excess oil, but not so much that all the oils are stripped from the hair and skin.Laura Janelswanson@sunflower.bio.indiana.edu
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