Assertion: comfrey's substance | /r/CapableOf | help tannins
Facets:
Source sentences:
text: Comfrey plant contains substances that help skin regenerate, including allantoin, rosmarinic acid, and tannins.
text: It is also used in cosmetics because comfrey contains substances that help skin regrow, including allantoin, rosmarinic acid and tannins.
text: Comfrey contains substances that help skin regrow, including allantoin, rosmarinic acid, and tannins.