Epilobium Angustifolium Flower/Leaf/Stem Extract, also known as Willowherb Extract, is a valuable ingredient prized for its potent anti-irritant properties. It works to soothe and calm the skin, effectively reducing redness and discomfort, making it an excellent choice for sensitive or reactive skin types. As its risk level is not specified as high, there are no particular considerations beyond standard patch testing for new product introductions.