Because of its ability to tighten and tone, white oak bark has often been used for its benefits for varicose veins. White oak bark has also been used externally for skin issues like eczema and cuts, burns, and bruises. It has been historically used for wounds because it's a styptic herb, meaning it can stop bleeding. Another frequent and traditional use for white oak bark is to ease diarrhea. The tannins present in oak bark help to strengthen intestinal lining and help the body transition from watery stools to normal.
