[Code of Federal Regulations]
[Title 21, Volume 5]
[Revised as of April 1, 2008]
From the U.S. Government Printing Office via GPO Access
[CITE: 21CFR358.503]

[Page 312-313]
 
                        TITLE 21--FOOD AND DRUGS
 
CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF 
 
PART 358_MISCELLANEOUS EXTERNAL DRUG PRODUCTS FOR OVER-THE-COUNTER
HUMAN USE--Table of Contents
 
             Subpart F_Corn and Callus Remover Drug Products
 
Sec. 358.503  Definitions.

    As used in this subpart:

[[Page 313]]

    (a) Corn and callus remover drug product. A topical agent used for 
the removal of corns and calluses.
    (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.
    (c) Plaster vehicle. A fabric, plastic, or other suitable backing 
material in which medication is usually incorporated for topical 
application to the skin.