Other Information: Protect from heat and direct sunlight. Keep cap on bottle when not in use. Misc: 0.5 fl oz (15 ml) & irrigator. Carbamide peroxide 6.5%. By Scherer labs. Safe, fast acting. Doctor recommended. Improved formula. Alcohol free. Note: E.R.O Ear Drops will foam on contact with ear wax due to the release of oxygen. For Approved Uses: For occasional use as an aid to soften, loosen, and remove excessive ear wax.