{"data":{"id":"us/21-cfr-344.3","jurisdiction":"us","citation":"21 CFR 344.3","heading":"Definitions.","body":"As used in this part:\n(a) Anhydrous glycerin. An ingredient that may be prepared by heating glycerin U.S.P. at 150 °C for 2 hours to drive off the moisture content.\n(b) Earwax removal aid. A drug used in the external ear canal that aids in the removal of excessive earwax.\n(c) Water-clogged ears. The retention of water in the external ear canal, thereby causing discomfort and a sensation of fullness or hearing impairment.\n(d) Ear drying aid. A drug used in the external ear canal to help dry water-clogged ears.","path":["Title 21—Food and Drugs","CHAPTER I—FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES","SUBCHAPTER D—DRUGS FOR HUMAN USE","PART 344—TOPICAL OTIC DRUG PRODUCTS FOR OVER-THE-COUNTER HUMAN USE","Subpart A—General Provisions"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-21.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:47Z","sha256":"39ea4146661ad5881650057be335522b97df39543a424195fb21043da4be33c1","source_id":"us-cfr","stale":true,"prev":"us/21-cfr-344.1","next":"us/21-cfr-344.10"},"notice":"GroundRules: Original legal text. Not legal advice."}