U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
(a) General. The table in this section applies to human lice. The product labeling claim determines the required test species. The required test species for a labeling claim appears in paragraph (b) of this section. The required performance standards appear in paragraph (c) of this section.
(b) Test species. For products making a claim against lice, the required test species for a labeling claim appear in the following table.
Table 1 to Paragraph
| Labeling claim | Required test species |
|---|---|
| Lice | Testing on one of the following species is required:
Head louse ( |
(c) Performance standards. For labeling claims against lice, a performance standard of 100 percent is required.
