Aging causes our skin to get thinner. There is a break down of the lattice work under the skin formed by collagen fibers. This latticework acts to keep the skin tight and elastic.
Then, the thin skin, when seen in places without layers of fat (such as the skull or hands) gives a darker appearance...

With the skin around the eyes thinning, the blood vessels beneath and our own darker shadows of bone to begin to show through.

This may be worse due to genetic pre-disposition, but things like too much UV light and even smoking and worsen the effect.

Also a general lack of sleep or restful sleep is another culprit for baggy eyes and dark circles. It may have a lot to do with blood supply and oxygen in that area.

So, What Can be Done?

You may not be able to completely eliminate baggy eyes and dark circles, but you certainly can reduce them. Here are some real and effective tips to follow:

Drink plenty of fresh clean water daily and keep yourself hydrated

Take a 3mg tablet of melatonin (if your doctor agrees) each night, and try to get a more restful sleep Stop smoking

Wear refrigerated eye pack just before going to bed

Prepare a strong cup of tea with teabags, and then chill the bags with most of the water dripped out. Apply the teabags to closed eyes for 15 minutes during a nap or at the end of a long day.
Take collagen tablets, but consult your doctor to doses and frequency of such food supplements.
Consult your doctor if none of the above are helpful for you, as the problem may be related to something else that needs attention.

What you should not do is:

Do not use Preparation H. It can be very harmful

Do not buy expensive creams, as they do not work

Do not just cover the problem with makeup, and forget about it. Try to solve it, not hide it.
Do not assume plastic surgery is the only option. Leave the option of the knife as a last resort.
Remember, in many cases, its just your genetic disposition, and then not much of anything can eliminate the baggy eyes and dark circles, but certainly, some of the remedies we suggest can really help.

Natural Remedies and Home Remedies for Dark Circles Under Eyes