What happens if you use onion on your eyes for 5 days?
Putting onion directly on or near your eyes for several days can irritate and potentially injure them. Onions release sulfur-containing compounds that react with your tears to form mild acids, which is why they make you cry.
Possible effects after repeated exposure over 5 days include:
- Burning and stinging
- Redness and watering
- Swollen eyelids
- Blurred vision from irritation
- Increased light sensitivity
- Dryness after the tearing stops
- Scratches on the cornea if you rub your eyes a lot
- Higher risk of infection if raw onion juice gets into irritated tissue
In more severe cases, people can develop chemical conjunctivitis (eye inflammation) or corneal damage that may need medical treatment.
There’s no proven health or cosmetic benefit to applying onion to the eyes. Folk remedies sometimes claim onions can improve eyesight or eye color, but there’s no scientific evidence for that, and it can be risky.
If onion gets in your eyes:
- Rinse with clean lukewarm water or sterile saline for several minutes.
- Avoid rubbing.
- Remove contact lenses if you wear them.
- Seek medical care if pain, redness, or blurry vision lasts more than a few hours.
If you meant something specific—like onion slices on eyelids, onion juice drops, or just crying from cutting onions—I can explain that separately.