{"data":{"id":"us/21-cfr-358.720","jurisdiction":"us","citation":"21 CFR 358.720","heading":"Permitted combinations of active ingredients.","body":"(a) Combination of active ingredients for the control of dandruff. Salicylic acid identified in § 358.710(a)(4) may be combined with sulfur identified in § 358.710(a)(7) provided each ingredient is present within the established concentration and the product is labeled according to § 358.750.\n(b) Combination of control of dandruff and external analgesic active ingredients. Coal tar identified in § 358.710(a)(1) may be used at a concentration of 1.8 percent coal tar solution, on a weight to volume basis, in combination with menthol, 1.5 percent, in a shampoo formulation provided the product is labeled according to § 358.760.","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 H—Drug Products for the Control of Dandruff, Seborrheic Dermatitis, and Psoriasis"],"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":"a2f2e7e01e7227f35991a5e7fb4030823ec487e39169a93464bd43f9ff0fba9c","source_id":"us-cfr","stale":true,"prev":"us/21-cfr-358.710","next":"us/21-cfr-358.750"},"notice":"GroundRules: Original legal text. Not legal advice."}