The high Ash (Fraxinus excelsior) is a large common tree found in European forests.
Its height of up to 40 meters attracts lightning. Its bark contains esculin and fraxin, two heterosides known to actively decrease the permeability of blood capillaries. This activity, known as vitamin P activity (P for permeability), confers a veinotonic and vasculoprotective action to the product.
Fraxin and esculin also present antioxidant activity to help protect the blood capillaries but also to fight against the degradation of haemoglobin into colored compounds and thus reduce coloration under the eyes.