c0818f1a_Health_Information_Library__Why
[Used for] 1 Star Canker Sores Refer to label instructions [Why] 
Witch hazel is an astringent herb that can be used as a mouth rinse to soothe the pain of canker sores. The herb contains tannins that can bind up fluids and possibly relieve inflammation. Historically, herbs known as astringents have been used to soothe the pain of canker sores. These herbs usually contain tannins that can bind up fluids and possibly relieve inflammation. They are used as a mouth rinse and then are spit out. None of these herbs has been studied in modern times. Examples of astringent herbs include agrimony, cranesbill , tormentil, oak , periwinkle , and witch hazel. Witch hazel is approved by the German Commission E for local inflammations of the mouth, presumably a condition that includes canker sores.
Health Information Library
Why