The white part of your eyes is known as sclera and can often change colors based on the health of an individual. A red tinge in the eye can indicate lack of sleep or an infection, but a yellowish color may signify something much more serious like hepatitis! If your eyes are an unnatural color, be sure to see a doctor, but if you're dealing with tired, red eyes I have a few tips for brightening them up! 1. Makeup! Use blue eyeliner or mascara. The color automatically reflects in the eye and camouflages the off-white to make it appear brighter.If you apply a blue shade of eyeliner or eye-pencil to the inner rim of your eyes, it can trick people into seeing your eyes as much whiter :) 2. Sleep! A good night’s sleep is the biggest secret to making your eyes appear fresh and bright. The amount of sleep required to lead a healthy and active life may vary from one individual to the other, but an average adult requires 6 to 8 hours of proper sleep. 3. Change Your Diet Yellowish eyes might indicate a bad liver while pale eyes indicate anemia. Make sure you are filling up on fruits, vegetables, and water! Avoid alcohol and beverages high in caffeine!