RE: sodium chloride to increase viscosity

[Guest guest]

Jules,

It is the alkyl sulfates and alkyl ether sulfates that work with NaCl to

increase viscosity. Betaines do not normally exhibit a salt curve. OTOH,

you can use a betaine with alkyl sulfates and alkyl ether sulfates to

increase the viscosity too. Just vary the ratio between the two.

Young

KY Labs

Innovators of Fine Personal Products

www.kylabs.com

sodium chloride to increase viscosity

question for the experts (or anyone who has done this successfully,

who then by definition could be an expert...*grin*)

frequently formulas (I'm specifically looking at detergenty things

like bubble bath, shower gel, etc) will indicate that you should

increase the viscosity of a product with sodium chloride.

I understand why, but can someone give a general guideline as to how

much?? For example, if I had a formula that was (just as a quick

example) 50% water and 50% Amphosol CG (cocamidopropyl betaine 30%

active), would I use 1/10th of a percent? half? ten?

On ingredient lists where sodium chloride is the only real viscosity

modifier, it's usually listed close to last, which to me translates

as less than 1% (since it's usually right in there with the

preservatives).

Am I way off? I know I've totally trashed the salt curve in some of

my experiments where I used too much salt, but I thought I'd better

ask before my next experiments - I'm running out of Amphosol CG!

*grin*

thanks

Jules

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[Guest guest]

>It is the alkyl sulfates and alkyl ether sulfates that work with NaCl to

>increase viscosity. Betaines do not normally exhibit a salt curve. OTOH,

>you can use a betaine with alkyl sulfates and alkyl ether sulfates to

>increase the viscosity too. Just vary the ratio between the two.

I've never made a all betaine shampoo.

I agree with . To me, the most effective shampoo systems are built around

Ammonium Lauryl Sulfate (alkyl sulfates) and/or Sodium Laureth Sulfate (alkyl

ether sulfates)

with Cocamidopropyl Betaine with a touch of an amide like Cocamide MEA.

BTW Jules, the salt levels can be quite low. I've seen some salt curves where

0.3% salt will take a thin shampoo to a thick gel.

Maurice

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Maurice O. Hevey

Convergent Cosmetics, Inc.

http://www.ConvergentCosmetics.com

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