1. Active treatments: preparation names and active ingredients.

	Preparation name	Active ingredients
Oil‐based	Cerumenex	Triethanolamine polypeptide
	Earex	Arachis oil, almond oil, camphor oil
	Cerumol	Arachis oil, chlorobutanol hemihydrate
	CleanEars	Mineral oil, squalane, spiramint oil
	Almond oil	Almond oil
Water‐based	Colace	Docusate sodium
	Otocerol	Phenazone, sodium bicarbonate
	Sodium bicarbonate	Sodium bicarbonate solution
	Acetic acid	Aqueous acetic acid
Non‐water, non‐oil‐based	Audax	Choline salicylate, glyceride
	Auro	Carbamide hydroxide, anhydrous glycerin