You can extract jewelweed into a base oil for soap, and/or into part of the water used in soap. Then run the saponification reaction with 50% lye in water, with the jewelweed infused oil, and then add the water infused with jewelweed at trace. Or you can just used plain oil base, with lye, and add jewelweed infusion in water at the end.
And how does one make jewelweed soap? (Not that there's any poison ivy here in Aus to be worriedabout)
You can extract jewelweed into a base oil for soap, and/or into part of the water used in soap. Then run the saponification reaction with 50% lye in water, with the jewelweed infused oil, and then add the water infused with jewelweed at trace. Or you can just used plain oil base, with lye, and add jewelweed infusion in water at the end.