[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: 21CFR333.310]

[Page 229]
 
                        TITLE 21--FOOD AND DRUGS
 
CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF 
 
PART 333_TOPICAL ANTIMICROBIAL DRUG PRODUCTS FOR 
OVER-THE-COUNTER HUMAN USE--Table of Contents
 
                  Subpart D_Topical Acne Drug Products
 
Sec. 333.310  Acne active ingredients.

    The active ingredient of the product consists of any of the 
following when labeled according to Sec. 333.350.
    (a) Resorcinol 2 percent when combined in accordance with Sec. 
333.320(a).
    (b) Resorcinol monoacetate 3 percent when combined in accordance 
with Sec. 333.320(b).
    (c) Salicylic acid 0.5 to 2 percent.
    (d) Sulfur 3 to 10 percent.
    (e) Sulfur 3 to 8 percent when combined in accordance with Sec. 
333.320.