28 C.F.R. § 551.1 Policy.
Title 28 - Judicial Administration
The Bureau of Prisons permits an inmate to select the hair style of personal choice, and expects personal cleanliness and dress in keeping with standards of good grooming and the security, good order, and discipline of the institution.
Title 28: Judicial Administration
PART 551—MISCELLANEOUS
Subpart A—Grooming
§ 551.1 Policy.
