---
kind: "section"
citation: "21 C.F.R. § 524.2101"
title: "21"
number: "524.2101"
heading: "Selenium disulfide suspension."
url: "https://uscodex.org/cfr/21/524.2101"
---

# §524.2101. Selenium disulfide suspension.

- (a) **Specifications.** The product contains 0.9-percent weight in weight (w/w) selenium disulfide (1-percent weight in volume (w/v)).
- (b) **Sponsors.** See Nos. 000061 and 017135 in [§ 510.600(c)](/cfr/21/510.600.md?p=c) of this chapter.
- (c) **Conditions of use on dogs—**
  - (1) **Indications for use.** For use as a cleansing shampoo and as an agent for removing skin debris associated with dry eczema, seborrhea, and nonspecific dermatoses.
  - (2) **Amount.** One to 2 ounces per application.
  - (3) **Limitations.** Use carefully around scrotum and eyes, covering scrotum with petrolatum. Allow the shampoo to remain for 5 to 15 minutes before thorough rinsing. Repeat treatment once or twice a week. If conditions persist or if rash or irritation develops, discontinue use and consult a veterinarian.

## Notes

### Amendments

[47 FR 53351, Nov. 26, 1982, as amended at 48 FR 32762, July 19, 1983; 54 FR 36962, Sept. 6, 1989; 56 FR 9623, Mar. 7, 1991; 58 FR 41025, Aug. 2, 1993; 63 FR 26981, May 15, 1998; 70 FR 50183, Aug. 26, 2005; 84 FR 39184, Aug. 9, 2019; 88 FR 27700, May 3, 2023]

### Authority

Authority: 21 U.S.C. 360b.

### Source

Source: 40 FR 13873, Mar. 27, 1975, unless otherwise noted.

### Amendments

[47 FR 53351, Nov. 26, 1982, as amended at 48 FR 32762, July 19, 1983; 54 FR 36962, Sept. 6, 1989; 56 FR 9623, Mar. 7, 1991; 58 FR 41025, Aug. 2, 1993; 63 FR 26981, May 15, 1998; 70 FR 50183, Aug. 26, 2005; 84 FR 39184, Aug. 9, 2019; 88 FR 27700, May 3, 2023]