Usually refers to the extract of the witch hazel shrub (Hamamelis), which is commonly used as an astringent, meaning that it has the ability to shrink the skin and other body tissues. Witch hazel can limit inflammation and subdue some of the symptoms caused by inflammatory skin conditions such as razor burn.

Witch hazel extract is considered safe and is a common ingredient in many topical skin care products. In large amounts, it may be dangerous for people with liver problems.