Other Information: Do not store above 25 degrees C (77 degrees F). Store bottle in the outer carton. Product foams on contract with earwax due to release of oxygen. There may be an associated crackling sound. Keep tip on bottle when not in use. Carbamide peroxide. Safe & gentle. Microfoam cleansing action. Easy to use instructions. No. 1 doctor pharmacist recommended. Debrox.com. Questions? 1-866-255-5202; Debrox.com. Made in Germany.