To make the whites of your eyes as white as possible, get adequate rest, drink plenty of water and avoid irritating allergens, advises Dr. Frederick Prall of HealthTap. Eye drops can also help whiten eyes, but using them too often can actually increase redness, notes Beauty High.
Dehydration wreaks havoc on the eyes, so in addition to drinking lots of water, it's important to avoid dehydrating, high-caffeine liquids, such as coffee, tea and soft drinks, for the whitest eyes possible, advises Beauty High. Also avoid processed, high-fat, high-sugar foods that can overwork the liver and lead to red or yellow eyes. Instead of snacking on junk food, eat carrots. They are loaded with vitamins A and C and promote healthy, sparkling eyes.
Abstaining from smoking and avoiding second-hand cigarette smoke is also advised, according to Beauty High. Exposure to cigarette smoke can turn white eyes red almost instantly.
In addition to damaging the skin, sunlight can also damage the eyes. As exposure to sunlight can yellow the eyes overtime, wearing sunglasses that provide UVA and UVB protection is recommended, notes Beauty High.
Using a cold compress can help to whiten red, tired eyes, according to Beauty High. Soak a washcloth in a bowl filled with cold water and ice. Once the washcloth is saturated, wring out excess water, fold it and place it over the eyes for 10 minutes, two or three times per day.