Skin, Wound and Topical Herbs
Herbs applied to the skin rather than swallowed — wound herbs, the antifungal leaves, and the hair traditions. Some belong here precisely because they are unsafe internally, comfrey most of all.
A herb is filed here by what it is traditionally used for, not by a claim that it works. Each herb page states its own evidence tier, its documented harms and its drug interactions — read those before the category name.