The skin under the eye is the thinnest on the face, with few oil glands, and it is moving all day with every blink. That explains both why the first fine lines appear there and why everything underneath shows through more easily.
Where Dark Circles Come From
There are several causes and in most people they overlap. Telling them apart is the only way to judge what can be expected at all.
Vascular
On thin, paler skin the blood vessels beneath show through as blue and purple. Tiredness and poor sleep make them more visible, because the vessels dilate. Skincare has little influence here: it can improve hydration and how the skin looks, but it does not remove what is showing through it.
Pigmented
On a darker phototype, and after inflammation or persistent eye rubbing, the skin in this area makes more melanin. This is the kind that responds best to care for a more even tone and to daily sun protection.
Anatomical
Where there is a hollow under the eye, the edge of the bone casts a shadow. The shadow looks like a dark circle in every photograph and does not change with a cream, because it is not a question of skin colour but of contour. Correcting it is a matter for an aesthetic medicine specialist.
How to tell which is yours
Stretch the skin under the eye gently to the side. If the darkness lightens, there is probably a vascular share in it. If it stays the same, look at your face once lit from above and once lit from below: if the darkness disappears when the light comes from below, it is most likely a shadow from the contour rather than pigment. This is not a diagnosis; if in doubt, ask a dermatologist.
Puffiness Is Something Else
Under-eye bags and morning puffiness are not the same thing. Morning puffiness is usually retained fluid and it eases through the day. A cool texture, a higher pillow, less salt in the evening, light tapping from the inner corner outwards and products with caffeine, which constricts blood vessels and can temporarily reduce the look of puffiness, all help.
Persistent bags that do not change through the day are most often displaced orbital fat. Skincare does not change those, and the question there is one for a doctor.
When it is not a cosmetic question
If the puffiness is constant, does not change through the day, or is on one side only, the cause may be medical and the question is one for a doctor. The same applies to a sudden change with no clear reason.
What a Cream Can and Cannot Do
It can hydrate, make the skin look smoother and firmer, make fine lines less visible and, where the circles are pigmented, help the tone look more even. It cannot remove vessels showing through, change the contour of the face, or replace sleep.
Ingredients That Make Sense Here
Peptides are well tolerated and the sensible everyday choice for fine lines. Hyaluronic acid works on hydration, which makes lines look shallower. Caffeine constricts blood vessels and can temporarily reduce the look of puffiness; the effect is short-lived, which is why it turns up in morning products. Niacinamide is a good choice where the circles are pigmented.
Retinol around the eyes
It is possible, but at a lower concentration and less often than on the rest of the face, and never on the lid itself. If the skin reddens or flakes, the frequency was too high.
Do You Need a Separate Product
If your face cream is light and does not irritate, it can go in this area too. Products made for the eye contour have lighter textures and a composition that takes into account how close to the eye they end up, which makes them the easier choice for this area, especially at night.
How to Apply It
An amount the size of a grain of rice is enough for both eyes. Apply it with your ring finger along the bone under the eye and out to the temple, patting lightly, without pulling the skin. At night, not too close to the lashes, so the product does not get into the eye overnight.
Morning and evening
A lighter texture in the morning, one that sits well under concealer. A richer one in the evening. Sun protection applies to this area too: ultraviolet light is among the main causes of photoageing, around the eyes included.
What to Expect, and When
Hydration and comfort come quickly. A visible change in fine lines is measured in weeks of regular use. With vascular and anatomical circles the change stays small whatever the product, and that is worth knowing before you buy.
When the Question Is One for a Doctor
With constant puffiness, with a sudden change, with itching and flaking of the lid, or with circles that deepen quickly, see a dermatologist, and for changes affecting the eye itself, an ophthalmologist. Skincare looks after how the skin looks and feels; it is not a diagnosis.
Where to Look
The products for this area are gathered in eye creams, and the subject, together with the salon therapies for it, is in dark circles and under-eye puffiness. For the wider logic of anti-ageing care, see anti-ageing care.
