{"data":{"id":"us/21-cfr-358.103","jurisdiction":"us","citation":"21 CFR 358.103","heading":"Definitions.","body":"As used in this subpart:\n(a) Wart remover drug product. A topical agent used for the removal of common or plantar warts.\n(b) Collodion-like vehicle. A solution containing pyroxylin (nitrocellulose) in an appropriate nonaqueous solvent that leaves a transparent cohesive film when applied to the skin in a thin layer.\n(c) Plaster vehicle. A fabric, plastic, or other suitable backing material in which medication is usually incorporated for topical application to the skin.","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 358—MISCELLANEOUS EXTERNAL DRUG PRODUCTS FOR OVER-THE-COUNTER HUMAN USE","Subpart B—Wart Remover Drug Products"],"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":"1c93cfc0eb856e8b35ca5a43cc02e0830a491f9721aa51b84f8dc7eacd756e30","source_id":"us-cfr","stale":true,"prev":"us/21-cfr-358.101","next":"us/21-cfr-358.110"},"notice":"GroundRules: Original legal text. Not legal advice."}