Dark Circles Under the Eyes

Dark Circles Under the Eyes — discoloration or shadowing of the skin beneath the lower eyelids that can appear brown, blue, purple, or as a hollow shadow. They arise from a mix of factors including thin under-eye skin, visible blood vessels, excess pigment, and the natural tear-trough hollow, and their look often shifts with fatigue, hydration, and lighting.

Key points

• Under-eye skin is among the thinnest on the body, so underlying blood vessels and muscle can show through as bluish or purple tones.
• Genetics and ethnic background strongly influence periorbital hyperpigmentation, which tends to appear more brown in tone.
• Volume loss and a deepening tear trough with age create shadowing that reads as darkness even without a true change in pigment.
• Ingredients like vitamin C, niacinamide, caffeine, and consistent broad-spectrum sunscreen may help improve the look of certain types over time.

Frequently asked

Does lack of sleep really cause dark circles?

Poor sleep can make circles look worse by causing paler skin and mild fluid retention that increase contrast and shadowing, though it is usually a temporary aggravator rather than the underlying cause.

Can eye creams get rid of dark circles completely?

Eye creams may soften the look of pigment- or dehydration-related circles, but structural causes such as thin skin, visible vessels, or hollowing typically respond only partially to topical products.

Related topics

• Hyperpigmentation Explained
• Acne: Causes, Types and Treatment
• Under-Eye Fine Lines
• Under-Eye Bags and Puffiness
• Dark Spots
• How Do I Choose Sunscreen for Dark Skin?
• Does Toothpaste Whiten Dark Spots?
• Can I Use Vitamin C Under Sunscreen?

This is a foundational entry in the SYNC Skin Encyclopedia and is expanded over time. Educational information only — not medical advice.