In general, vessels are defined as hollow utensil for carrying something: a cup, a bucket, a tube. Blood vessels are hollow utensils for carrying blood.

Located throughout your body, your blood vessels are hollow tubes that circulate your blood.

Dark circles under the eyes may result from a number of possible causes including environmental pollutants, hereditary factors (dark circles under the eyes tend to run in families), engorged blood vessels (because the skin under the eye is so thin, if the blood vessels becomes enlarged they tend to show up as dark circles), fatigue, allergies, over exposure to the sun, menstruation or pregnancy. Dark circles may be simply a part of the aging process; when the padding from fat cells beneath the eye begin to thin with age, it can create a sunken look to the under eye area.

For a few years Vitamin K1 has been successfully incorporated in the cosmetics field to treat blood vessel damage (Couperose/Teleangiektasia) as well as for stress induced dark eye circles (blood penetration from the vessels into the tissue).
Dark eye circles can be effectively treated with Vitamin K1; it strengthens the delicate blood capillaries of the eye tissue, thus inhibiting the release of blood into the tissue. Vitamin K1 is found in our Bi-Care Eye Cream