Re: Dimethicone

[Guest guest]

Bobbi,

The particular dimethicone in question (we're on the same list), is the one

I am supplying. Dimethicone in its simplest form is polydimethylsiloxane,

also known as silicone oil, but now more commonly called by its INCI name

Dimethicone.

Dimethicone, aka silicone fluid comes in various viscosities from 5 cSt

(centistokes, a measure of viscosity or thickness) up to 1,000,000. The one

I am supplying is a medium viscosity food grade fluid of 1000 cSt. This

viscosity is akin to corn syrup. This particular product, DM-1000 is

distributed by Chemsil Silicones, a resource provided to me by Maurice. You

can visit their website to see their various silicone offerings, too, at

http://www.chemsil.com/

Used at a rate of 1% to 30% dimethicone conforms to the FDA's Tentative

Final Monograph on OTC Skin Protectants. However, provided you make no drug

claims for it, dimethicone does not have to be declared as an active

ingredient, nor does your product or facility need to conform to OTC drug

production standards. Dimethicone can be added to any cosmetic and declared

on the ingredient label in descending order, as usual.

This happens to be the type and viscosity of silicone fluid I have been

using in my lotions for the past 2 years. When I needed more, I stayed with

what I knew worked well for me.

Since there are a lot of variants on silicone, and many share the same INCI

name of dimethicone, I'd thought I'd share specifically the product that has

been under discussion.

Hope this helps,

Dimethicone

One of the groups I am on has posts re using Dimethicone in lotions to cut

down on the greasy feel and leave a silky feel on the skin.

I did a goggle search and found that this ingredient comes in way to many

forms for me to figure out which one is appropriate for use in lotions.

It is a silicone and that would account for some of the feel I would

imagine.

It's used in pharmaceuticals like in antacids and as a barrier for rashes.

Below is a list of the dimethicone products available from one web site I

perused.

Any comments on using dimethicone in lotions would be appreciated as well as

the proper form of same if I were to choose to use this in my lotions.

Thanks,

Bobbi ~

Specialty Silicone Derivatives from Noveon (formerly BFGoodrich Performance

Materials)

a.. -- unique additives offering multifunctional benefits

b.. Dimethicone PEG-7 Avocadoate (UltrasilT DW-AV Silicone)

c.. Dimethicone PEG-7 Cocoate (Ultrasil SW-12 Silicone)

d.. Dimethicone PEG-7 Isostearate (Ultrasil DW-18 Silicone)

e.. Dimethicone PEG-7 Olivate (Ultrasil DW-O Silicone)

f.. Dimethicone PEG-7 Phthalate (Ultrasil CA-1 Silicone)

g.. Dimethicone PEG-8 Beeswax (Ultrabee® WD Silicone)

h.. PEG-7 Amodimethicone (Ultrasil A-21 Silicone, Ultrasil A-23 Silicone)

i.. PEG-8 Dimethicone (Ultrasil Copolyol-1 Silicone)

Bobbi Guerra

The Purple Sage

Fine Hand Made Bath & Body Products

[Guest guest]

>One of the groups I am on has posts re using Dimethicone in lotions to cut down

on the greasy feel and leave a silky feel on the skin.

This is possible.

>I did a goggle search and found that this ingredient comes in way to many forms

for me to figure out which one is appropriate for use in lotions.

We people say they are using Dimethicone in a formula, I immediately think that

they are using an ingredient that meets the INCI definition of Dimethicone.

Examples of

typical Dimethicones can be found in the CosmeticInfo Files Area:

http://groups.yahoo.com/group/Cosmeticinfo/files/Ingredients/dimethicone.pdf

>It is a silicone and that would account for some of the feel I would imagine.

The word " silicones " covers a multitude of different possibilities. And each

molecular configuration will give you a different feel.

>It's used in pharmaceuticals like in antacids and as a barrier for rashes.

>

>Below is a list of the dimethicone products available from one web site I

perused.

>

>Any comments on using dimethicone in lotions would be appreciated as well as

the proper form of same if I were to choose to use this in my lotions.

The are just too many different silicones and silicone derivatives. No one can

evaluate all of them. One particular Dimethicone may be good in perfect in one

system (cream

or lotion) at 0.5% and another cream or lotion may need a totally different

Dimethicone.

Every formulator has their favorites for different purposes. That's why it's

important to experiment.

Why don't you order samples of 3 different Dimethicones. Why don't you try

100cs, 500cs and 1000cs. Make up three lotion formulas and add a different

Dimethicone to

each. Start at 1%. See what happens.

High viscosity Dimethicone fluids give interesting effects but are difficult to

work with. Some manufactures of silicones will blend high molecular weight (aka

high viscosity)

Dimethicones with thinner, sometimes, volatile silicones. Dow Corning 1411

Fluid is an example.

You might want to read " Advances_in_the_Use_of_Silicones_in_Cosmetics.pdf

http://groups.yahoo.com/group/Cosmeticinfo/files/Ingredients/Advances_in_the_Use\

_of_Silicones_in_Cosmetics.pdf.

And spend some time on the Dow Corning website:

http://www.dowcorning.com/

Maurice

------------------------

Maurice O. Hevey

Convergent Cosmetics, Inc.

http://www.ConvergentCosmetics.com