Avoiding Salty foods can reduce water retention.

Avoid salty foods. They can cause fluid retention and eye puffiness.

However to fix:

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• Apply a cold compress to your eyes for 10 minutes. "The cold brings swelling down," says James R. Lyons, a plastic surgeon in Westport, Connecticut. Good choices include chilled teaspoons, a sliced cucumber, or cold, wet tea bags.                                                     
• Follow with a firming eye cream that contains caffeine.