How do you get rid of bags under your eyes?

How do you tell fluid from fat?

Watch the clock. A fluid bag is worst on waking and settles over a few hours upright as gravity and lymphatic drainage do their work. A fat bag is there all day, and there after a good night's sleep.

Look at the shape. A fluid bag is diffuse puffiness with soft edges. A fat bag has a defined border and often reads as one to three separate lobes, which is how the orbital fat compartments are arranged.

Consider age and history. Something that appears in your twenties and tracks with sleep is usually fluid. Something that settles in permanently after thirty-five is usually fat. Allergic rhinitis, thyroid problems and some medications cause persistent fluid retention too — that is worth a doctor rather than an eye cream.

For fluid bags, what actually works?

Sleep position. Lying flat lets interstitial fluid pool around the eyes. Raising the pillow so your head sits a little above your heart makes a visible difference by the next morning for most people. It is the cheapest and fastest item on this list.

Salt and alcohol. Both increase fluid retention and both show up on your face the next morning. This is not folklore; you can run the experiment on yourself over two days and look in the mirror.

Cold. Low temperature constricts vessels and reduces swelling within minutes. The effect is temporary and real, which is why chilled spoons and cooling eye masks are not just theatre.

A caffeine eye cream. Caffeine is a vasoconstrictor and has a short-term effect on fluid puffiness. It does nothing at all for herniated fat — which is why one person finds an eye cream mildly useful and another finds it worthless. They do not have the same problem.

Why do topicals not work on fat bags?

Because the thing that would have to change is not in the skin. The orbital septum is a sheet of fascia holding the fat inside the eye socket behind it. With age it loosens, the fat pushes forward, and a bulge forms under skin that may itself be perfectly healthy.

A product applied to the epidermis cannot tighten a sheet of fascia several millimetres beneath it, and cannot reduce the volume of a fat pad. Any topical claiming to eliminate under-eye bags is either talking about the fluid kind or running past its evidence.

What addresses it is lower blepharoplasty, which removes or repositions the fat, and in some cases filler placed in the tear trough so the step between bulge and hollow is less abrupt — that does not remove fat, it changes the contrast around it.

Are bags, dark circles and fine lines the same problem?

No, and confusing them is the most common mistake made in this area. Three causes, three different ceilings on what can improve, and buying the wrong product is the normal outcome.

Fine lines are creases in the skin and respond to hydration and retinoids. Bags are the two things above. Dark circles may be pigment, visible vasculature, or shadow cast by a tear-trough hollow — and in that last case the bag itself is what casts the shadow, so treating the bag improves the "circle" as a side effect.