Dark Under-Eye Circles: Causes and Treatment Approaches

Dark circles under the eyes are not caused by a single problem. Increased pigmentation, visible veins beneath the skin, shadows caused by tear trough depressions, edema/bags, skin laxity, and combinations of these can all create a similar "purple or dark circle" appearance. Therefore, no single cream, laser, or filler will yield the same results for everyone.

During the examination, it is determined whether the darkness is predominantly pigmented, vascular, structural, or mixed. A brown tone suggests more pigmentation; a purple-blue tone may indicate visible blood vessels. Hollows or bags can create a dark appearance due to light-shadow effects, even without actual pigment increase.

Atopic dermatitis, contact dermatitis, and chronic eye rubbing can increase post-inflammatory pigmentation. Sleep deprivation and edema can accentuate the appearance, but sleep deprivation is often not the sole cause of long-standing dark circles.

In pigment-dominant hair types, photoprotection, appropriate topical agents, selected peels, and some laser/light systems can be considered. If structural depressions are predominant, fillers or other volume-regulating approaches may be more meaningful; fillers do not directly release pigment. Auto-filling approaches are not suitable in the presence of significant puffiness, malar edema, or festoon.

Platelet-rich plasma (PRP), mesotherapy, and other regenerative approaches have shown improvement in some studies; however, there is insufficient evidence to say that they are the standard or universally superior treatment. Treatment should be personalized according to the predominant mechanism of onset.