This article needs additional citations for verification. Minor dark circles and a hint of periorbital puffiness—a combination 3w clinic collagen whitening eye cream suggestive of minor sleep deprivation.
There are many causes of this symptom, including heredity and bruising. Any condition that causes the eyes to itch can contribute to darker circles due to rubbing or scratching the skin around them. Hay fever sufferers in particular will notice under-eye «smudges» during the height of the allergy season. Any medications that cause blood vessels to dilate can cause circles under the eyes to darken. Because the skin under the eyes is very delicate, any increased blood flow shows through the skin. The lack of nutrients in the diet, or the lack of a balanced diet, can contribute to the discoloration of the area under the eyes.