[Code of Federal Regulations] [Title 21, Volume 5] [Revised as of April 1, 2001] From the U.S. Government Printing Office via GPO Access [CITE: 21CFR358.510] [Page 295-296] TITLE 21--FOOD AND DRUGS CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES--Continued PART 358--MISCELLANEOUS EXTERNAL DRUG PRODUCTS FOR OVER-THE-COUNTER HUMAN USE--Table of Contents Subpart F--Corn and Callus Remover Drug Products Sec. 358.510 Corn and callus remover active ingredients. The product consists of any of the following active ingredients within the [[Page 296]] specified concentrations and in the dosage form established for each ingredient. (a) Salicylic acid 12 to 40 percent in a plaster vehicle. (b) Salicylic acid 12 to 17.6 percent in a collodion-like vehicle.