Step 4: Label your Bottle
The vinegar is a good preventive since it restores the ear canals acidity. The vinegar is mainly to water down the alcohol so there is less or no discomfort younger children's ears. The alcohol is the main ingredient to flush out the water and help with the evaporation of any water left over. Be sure to replace the formula every now and then with a new batch. I'm sure you don't have to worry about it, but I'm sure it gets old eventually.
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