I wanted to be able to add herbal infusions to my soap for their herbal properties, but the more I read the more I think the herbal properties don't survive saponification, other than scent in some cases. Disappointing. I live in a rural area and have lots of wild plants that i would like to use in soap, but it doesn't sound like any medicinal properties remain after the lye and oils interact. I have made some cottonwood resin soap that has a lovely smell and color, and I know that pine tar's therapeutic properties survive the soap making, so maybe "balm of Gilead" does too.