{"data":{"id":"us/21-cfr-333.320","jurisdiction":"us","citation":"21 CFR 333.320","heading":"Permitted combinations of active ingredients.","body":"(a) Resorcinol identified in § 333.310(b) may be combined with sulfur identified in § 333.310(f).\n(b) Resorcinol monoacetate identified in § 333.310(c) may be combined with sulfur identified in § 333.310(f).","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 333—TOPICAL ANTIMICROBIAL DRUG PRODUCTS FOR OVER-THE-COUNTER HUMAN USE","Subpart D—Topical Acne 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":"b538b846fc21595c7db78b2739d26675bccdb1ffc3f5b918748ac8ff4f353bf9","source_id":"us-cfr","stale":true,"prev":"us/21-cfr-333.310","next":"us/21-cfr-333.350"},"notice":"GroundRules: Original legal text. Not legal advice."}