Online Course

[Guest guest]

I think many list members will find this short online course

http://www.kcpc.usyd.edu.au/discovery/9.5.5/index.html

interesting. The course covers the following subjects:

Saponification Reactions

Industrial Saponification (Raw Materials)

Industrial Saponification (Processes Intro)

Kettle Boiled Batch Saponification

Fatty Acid Neutralisation

Introducing Surfactants

Soaps in Hard Water

Soaps vs Detergents

Oil and Water Can Mix

Surfactants and Emulsions

Types of Emulsions

Detergency and Cleaning

Classification of Surfactants

Anionic Surfactants

Cationic Surfactants

Nonionic Surfactants

Maurice

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Maurice O. Hevey

Convergent Cosmetics, Inc.

http://www.ConvergentCosmetics.com

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[Guest guest]

Hi Everyone,

I'm Angie- new to this group. I'm loving it so far, too!

I have this quote regarding non-ionic surfectants, from the on-line course

discussed in this thread. Here goes:

Uses of <A

HREF= " http://www.kcpc.usyd.edu.au/discovery/glossary-all.html#207 " >Nonionic</A>

<A

HREF= " http://www.kcpc.usyd.edu.au/discovery/glossary-all.html#87 " >Surfactants</A\

>

" The predominant use of these surfacants is in foods and drinks,

pharmaceuticals and skin-care products. It is thought that these <A

HREF= " http://www.kcpc.usyd.edu.au/discovery/glossary-all.html#87 " >surfactants</A\

>

are mild on the skin even at high loadings and long-term exposure (although

they can lead to a weakening of the skin barrier by helping the transport of

molecules "

How can they lead to " a weakening of the skin barrier by helping the

transport of molecules " ? What kinds of molecules? Is the surfectant going

to cause a breakdown in plasma membrane?

Thanks to all,

Angie P.