Assertion: comfrey's substance | /r/CapableOf | keep skin
Facets:
Source sentences:
text: Comfrey roots and leaves contain allantoin, a substance that helps new skin cells grow, along with other substances that reduce inflammation and keep skin healthy.
text: Comfrey leaves and roots contain allantoin and rosmarinic acid, substances that help new skin cells grow and increases general rates of cell multiplication, along with other substances that reduce inflammation and keep skin healthy .