Tender kegger is naturally loaded impact antioxidants. Antioxidants are needed by the body to protect cells from handout radicals ( unstable molecules ...
medicinenews.healthmaterialforyou.info/?p=318 - 8k -

In such things as paints and mortars and putties and plastics, a "charge" is a filler, and expander, something used to bulk out the basic active product. The role of the "charge" in your soap would be rather different since it would be there for a very real abrasive function, presumably, but "filler" just might work.

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Note added at 2 hrs (2008-01-25 00:19:07 GMT)
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Soap bars made from E-516 fatty acid, and with and without PUMICE, an inert, unreactive FILLER, were prepared for the purposes of demonstrating the need to ...
www.freepatentsonline.com/4574053.html

Soap recipes :
Cinnamon & Spice Oatmeal Soap
2 oz castor oil
4 oz olive oil
2 oz wt sunflower oil
4 oz wt soybean oil
4 oz wt lard
2.1 oz wt lye
7 ounces water
Add at TRACE:
2 oz wt finely ground oatmeal was used as a FILLER
1/2 teaspoon Ground Cinnamon
Presumably in this one the pumice is the filler :
Mechanics Dream Bar
8 ounces olive oil
4 ounces coconut oil
4 ounces palm oil
1 ounce of lanolin added at trace
1 teaspoon finely ground PUMICE added at trace
1/8 cup finely ground expresso added at trace
2.3 ounces lye
7 ounces water
1 teaspoon Sandalwood Fragrance oil
http://www.colebrothers.com/soapcalc/free.html

Hess Pumice manufactures high quality PUMICE, precisely sized pumice for use as: industrial abrasive, FILLER, filtration, soap, and many other needs. ...
www.seidaho.org/links/business-manufacturing.htm

Soapstone or Steatite - This white saponaceous stone resembling pipe clay is obtained in as lenticular body and is associated with mineral pyrites, which adds a color to it, and in places with magnesite. it can be mined for use AS FILLER IN SOAP and in the cosmetic industries
http://rudraprayag.nic.in/geography.htm

Starch as FILLER IN SOAP and detergents. Uganda has eleven manufacturers of ... filler in soap manufacture (4–15%), and is normally blended with the soap ...
www.iita.org/cms/details/asareca_mono/asmono1.pdf

you can dry the sunflower petals and use them as A FILLER IN SOAP, they look very similar to dried calendula petals which can also be used in soap. ...
forum.downsizer.net/viewtopic.php?t=11794&start=0

Hello,

it just seems that "charge" is referring to what this soap is composed of.

I hope this helps.