As you age, the tissue structures and muscles supporting your eyelids weaken. The skin may start to sag, and fat that is normally confined to the area around the eye (orbit) can migrate forward below your eyes. Also, the space below your eyes can accumulate fluid, making the under-eye area appear puffy or swollen. Several factors can lead to this, including:

  • Fluid retention due to changes in weather (for example, hot, humid days), hormone levels or eating salty foods
  • Sleeping flat on your back
  • Not getting enough sleep
  • Allergies or dermatitis, especially if puffiness is accompanied by redness and itching
  • Heredity
Oct. 28, 2011