Eyes

Under-eye bags: where they come from and what shrinks them

Under-eye bags come from two things: fluid that builds up, mostly in the morning, or fat that moves forward under the eyelid with age and genetics. Fluid responds to a few habits. Fat doesn't leave after a good night's sleep, so it's worth knowing which you have before buying a cream. 😴

Updated November 7, 2026 · By Julien Rayes · Version française

Causes

The Mayo Clinic describes the mechanism: the tissues and muscles supporting the eyelid weaken, fat around the eye can slip downward, and fluid can pool underneath. Contributing factors:

• Age, which loosens these tissues.
• Genetics: pronounced bags often run in families.
• Water retention, stronger on waking and after a salty meal. 🧂
• Lack of sleep.
• Allergies.
• Smoking.
• More rarely, a medical condition: dermatitis, kidney disease, thyroid-related eye disease.

Fluid or fat: the mirror test

Look at your bags when you wake up, then late in the afternoon. If they're clearly bigger in the morning or after a salty dinner, it's mostly fluid: a 2016 review on the under-eye area notes this swelling is often worse in the morning and after a salty meal. If they stay the same size all day, and have for years, it's more likely fat, and the habits below won't change much.

What reduces fluid bags

• Sleep 7 to 9 hours a night.
• Sleep with your head slightly raised, with an extra pillow: less fluid collects around the eyes.
• Drink less right before bed, and cut back on salt, especially in the evening.
• Hold a cold, damp compress on your eyes for a few minutes after waking, sitting up. 🧊
• Treat allergies: avoid your triggers, and ask a pharmacist or doctor whether an antihistamine suits you.
• Stop smoking.
• In the meantime, concealer applied in the hollow under the bag, not on the bag itself, softens the shadow.

Options to discuss with a doctor

🩺 When the bag comes from loose skin or a hollow under the eye, the Mayo Clinic lists laser, peels and filler injections. These are medical procedures, to discuss with a dermatologist or qualified doctor. On darker skin, laser can leave lasting color changes, so the technique needs careful choosing. When the bag is made of fat, no surface treatment removes it; GlowUpTogether never recommends surgery.

When to see a doctor

⚠️ Bags are almost always harmless. See a doctor if they come with vision problems, irritation, headaches or a skin rash, if only one eyelid swells, or if the swelling appears suddenly and hurts.

What the scan looks at

The GlowUpTogether scan scores the area under your eyes on your front-facing photo, bags and dark circles separately. Your plan then ranks actions by expected effect in your case, from sleep and a raised head to drainage massage and concealer. Fluid bags change through the day, so retake your photos at the same time of day to compare.

Sources: Mayo Clinic, "Bags under eyes" (patient page, accessed 2026); Vrcek, Ozgur and Nakra, "Infraorbital Dark Circles: A Review of the Pathogenesis, Evaluation and Treatment", Journal of Cutaneous and Aesthetic Surgery, 2016; Cleveland Clinic, "Dark Circles Under Eyes" (accessed 2026); MedlinePlus, "Facial swelling" (accessed 2026).

Frequently asked questions

Do creams for eye bags work?

No cream removes a fat bag. For fluid bags, start with what costs nothing: sleep, a raised head, less salt in the evening, cold on waking.

Why do I have bags when I sleep well?

Because genetics and age matter too, as do salt, alcohol and allergies. If they don't change during the day, they're probably fat bags.

Are bags and dark circles the same thing?

No. A bag is swelling; a dark circle is darker color. The two often go together, since a bag casts a shadow below it. Our guide to dark circles covers their causes.