How do I calculate additive %'s

[Amber]

Bear with me here please.......
My rebatch vege soap melts completely to a clear liquid (is not M&P though).

Usually I use about 1 cup (about 140g or 1/4 poundish) of dry soap & add water.

My question is.... Do I calculate the additive% on the amount of dry soap? or the total amount once it has melted?

 

[soapbuddy]

I would go with the amounf of dry soap, since water will evaporate.

Irena