Hamamelis/ Witch Hazel/ Hamanelis/ Hamamelis virginiana
具收斂抗炎、止癢、傷口瘉合及鎮靜作用，主要萃取自樹葉及花瓣，常用於收斂性化妝水、洗髮精、面膜、鬍後水等產品。
It may have anti-oxidation and partial anti-skin irritation effects. The alcohol content of witch hazel is as high as 70~80%, and the alcohol content of witch hazel liquid is also 15%. Alcohol may cause skin irritation, and witch hazel also contains a lot of Tannins (tannins are a powerful antioxidant). Wipe tannins can reduce edema when just burned, but repeated tannins on the skin may cause skin irritation.
It has astringent, anti-inflammatory, anti-itch, wound healing and sedative effects. It is mainly extracted from leaves and petals. It is often used in astringent lotions, shampoos, facial masks, and so on.
ref.
Skin Pharmacology and Applied Skin Physiology, March-April 2002, pages 125-132
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