But before you rush to apply onion juice directly, it’s essential to understand how to use it safely.
The Gentle Way: How to Use Onion Juice Wisely

Barbara O’Neill and many natural health advocates emphasize gentle application and dilution. Onion juice should never be applied directly into the eyes. Instead, it can be used externally or consumed to support overall health from within.
Here are three safe approaches to explore:
1. External Compress Method
- Mix one part fresh onion juice with four parts distilled or cooled boiled water.
- Soak a clean cotton pad in the mixture.
- Place it over closed eyelids for 5–10 minutes.
This may help refresh tired eyes, promote circulation, and stimulate natural tear function.
2. Nutritional Support Approach
Consuming onion juice with honey or warm water can provide systemic benefits. The antioxidants and sulfur compounds may help support overall detoxification, indirectly benefiting the eyes.
Simple Recipe:
- Blend half an onion with one cup of water.
- Strain and mix one teaspoon of the juice with a tablespoon of raw honey.
- Drink once daily before breakfast for seven days.