Herb Pharm Sassafras Root Bark Liquid Extract, 1 Fl Oz

What the brand says

We prepare our Sassafras Extract from the root bark of Sassafras officinale trees which are Custom Wildcrafted in their wild native habitat. To assure optimal extraction of Sassafras' bioactive compounds, the root bark is hand-harvested only in the autumn or early spring, is carefully shade-dried and rossed free of adhering wood, and is then thoroughly extracted. FOR EXTERNAL USE ONLY.