Hi Puffle,
Have you looked at the ingredients within any eye creams you've previously purchased?
Silhouette have an Eye Neuvo serum which contains:
'Eyeseryl - a synthetic tetrapeptide with anti-oedema properties that has a proven efficiency in reducing puffy eye bags.
Matrixyl - the main ingredient is recognised as Micro-Collagen and acts fast on lines and wrinkles that form around the eyes. It helps restructure the skins' cellular matrix showing a major reduction in line and wrinkle intensity. You'll find that dark circles should diminish as the skins texture around the eye area becomes smoother & hydrated.'
It may be that you need to look at some kind of Dermafusion treatment where product from (for example) a collagen mask is infused into your skin to achieve twice the penetration in half the time.