---
kind: "section"
citation: "21 C.F.R. § 740.18"
title: "21"
number: "740.18"
heading: "Coal tar hair dyes posing a risk of cancer."
url: "https://uscodex.org/cfr/21/740.18"
---

# §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)](#b) of this section shall bear, in accordance with the requirements of [§ 740.2](/cfr/21/740.2.md), the following:
- (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).

## Notes

### Amendments

[44 FR 59522, Oct. 16, 1979]

### Authority

Authority: 15 U.S.C. 1451-1561; 21 U.S.C. 321, 351, 352, 353, 355, 356b, 360, 360c-360f, 360h-360j, 371, 374, 379e, 381; 42 U.S.C. 216, 241, 262, 263, 264; sec. 122, Pub. L. 105-115, 111 Stat. 2322 (21 U.S.C. 355 note).

### Amendments

[44 FR 59522, Oct. 16, 1979]