[Code of Federal Regulations] [Title 21, Volume 7] [Revised as of April 1, 2008] From the U.S. Government Printing Office via GPO Access [CITE: 21CFR740.18] [Page 163] TITLE 21--FOOD AND DRUGS CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) PART 740_COSMETIC PRODUCT WARNING STATEMENTS--Table of Contents Subpart B_Warning Statements Sec. 740.18 Coal tar hair dyes posing a risk of cancer. (a) The principal display panel of the label and any labeling accompanying a coal tar hair dye containing any ingredient listed in paragraph (b) of this section shall bear, in accordance with the requirements of Sec. 740.2, the following: Warning--Contains an ingredient that can penetrate your skin and has been determined to cause cancer in laboratory animals. (b) Hair dyes containing any of the following ingredients shall comply with the requirements of this section: (1) 4-methoxy-m- phenylenediamine (2,4-diaminoanisole) and (2) 4-methoxy-m- phenylenediamine sulfate (2,4-diaminoanisole sulfate). [44 FR 59522, Oct. 16, 1979] Effective Date Note: At 47 FR 7829, Feb. 23, 1982, Sec. 740.18 was stayed until further notice, effective Sept. 18, 1980.