Typical everyday injuries that involve swelling or bruising can be treated by simply applying a lotion or liquid form of Witch Hazel to the afflicted area. The healing properties of Witch Hazel can relieve the pain of many minor injuries, which is why so many athletes have turned to it for the medicinal benefits. Witch Hazel contains tannins which are believed to help reduce the swelling and speed up the inflammation process of an injured area.