Many beauty editors have said you are never too young to start using it. Generally, you would dab it under your eye, over your eye lid and the area between your nose and eye.
Eye creams have many talents - they protect the skin before makeup application, moisturise, reduce puffiness, reduce the appearance of dark circles and slow or prevent aging lines/evidence.
Jurlique Herbal Recovery Eye Cream - it's packed with botanical oils, help to fade dark circles (so it brightens) and firm.
It feels light but still moistursing the same time. Like all of their products, it smells lovely. 4 stars.
Estee Lauder Advanced Night Eye Cream - they aim for many things like decrease puffiness, fine lines, uneven skintone, wrinkles. Similar to the serum but thicker because the skin under the eye is more fragile. It feels hydrating during and after application. 4 stars
Trilogy Eye Contour Cream - feels lighter than the above two products and it doesn't really have a scent. After a couple of months, it smells 'off' which means something has gone wrong or they don't use preservatives (I doubt it). 2 stars