Witch hazel is a natural remedy made from the bark and leaves of a plant called Hamamelis virginiana. Long used in traditional medicine, witch hazel is usually applied topically in order to treat certain skin conditions.
Witch hazel contains tannins, a type of natural compound with astringent effects. By acting as an astringent, witch hazel helps to constrict skin tissue.
Proponents claim that witch hazel can heal a wide range of skin troubles, such as acne, bruises, burns, hemorrhoids, inflammation, insect bites, itching, pain, and varicose veins.
In addition, some people use witch hazel as a toner (a type of skin-care product said to cleanse the skin and tighten pores).