The Cure: When dark circles are created by hollowness under the eyes, the only long-term solution is the injection of a hyaluronic-acid filler (like Restylane) to replump the area. Many doctors now favor Belotero, the most recently FDA-approved hyaluronic-acid filler, to minimize sunken areas under the eyes. It doesn't create the blue tinge that can sometimes result when other hyaluronic-acid fillers are injected beneath thin skin.
The Quick Fix: An illuminating concealer (like Neutrogena Healthy Skin Brightening Eye Perfector Broad Spectrum SPF 25, $12; Neutrogena.com) makes hollow areas look fuller. Don't forget to blend it at the innermost corners of the eyes, which often cast the darkest shadows.
Next: 8 secret weapons for beautiful bright eyes