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AR 670-1 Mustache Regulation 2023 & 2024

Army Mustache Regulations
Army Mustache Regulations

The US Army mustache regulations are the rules governing mustaches in the Army.

These mustache regulations are defined in Chapter 3, Section 2, Paragraph 1 of Army Regulation  670-1, which addresses male grooming standards, including mustaches.


Before we dive into the regulations governing mustaches in the Army, it’s crucial to understand the importance of these rules.

The US Army’s appearance policy is not arbitrary but is rooted in tradition, practicality, and maintaining a professional image that signifies discipline and uniformity.

Military Mustache Regulations Origin

Tradition: The Army Mustache regulations date back to the Civil War and earlier. Keeping facial hair in check, especially in combat, meant a reduced risk of disease and infection.

Practicality: Soldiers with clean-shaven faces ensure gas masks and other protective equipment fit correctly, which is crucial in chemical warfare.

Professionalism: Soldiers maintaining a neat and conservative appearance are associated with discipline and respect, two qualities integral to the military ethos.

AR 670-1 Mustache Regulations 2024

The Army regulations for mustaches are as follows:

  • The Army allows Mustaches, but they must be neat and well-groomed.
  • Length and Bulk: Mustaches shall not present a “chopped off” or bushy appearance, and no portion of the mustache will cover the upper lip line or extend sideways beyond a vertical line drawn upward from the corners of the mouth.
  • Style: Soldiers should keep a neatly trimmed, conservative mustache that does not appear faddish.
  • Coloring: Soldiers will not dye their mustaches or any other facial hair an eccentric or faddish color.
  • Facial Hair: Handlebar mustaches, goatees, and beards are prohibited unless a soldier has a shaving profile (medical exception).

The Application of AR 670-1: Individual Responsibilities


  • Soldiers are responsible for meeting the grooming standards outlined in AR 670-1. 
  • Soldiers will maintain a neat and professional appearance at all times.


  • Leaders at all levels enforce the standards set out in AR 670-1. 
  • The Army requires Leaders to judge the appropriateness of a soldier’s appearance and take corrective action if necessary.

Non-Compliance with Army Mustache Regulations

  • Soldiers who do not comply with AR 670-1 Mustache regulations may receive administrative or disciplinary action under the Uniform Code of Military Justice (UCMJ).
  • The penalties range from counseling to non-judicial punishment and even discharge from the Army.

Accommodation for Religious Beliefs

  • Sometimes, the Army will accommodate religious beliefs requiring a specific facial hair style, such as those of Sikh and Muslim soldiers. 
  • Such exemptions require a religious accommodation request, which the Army will approve.
  • However, it is worth noting that even with these exemptions, mustaches and other facial hair must be neat and clean to maintain a professional appearance.


  • The US Army mustache regulations reflect its commitment to maintaining discipline, uniformity, and a professional image.
  • All soldiers must abide by these rules, which their leaders enforce.
  • While these guidelines may seem restrictive, they are in place for compelling reasons. 
  • All soldiers must familiarize themselves with AR 670-1 and ensure their appearance meets Army standards.

 Army Mustache Regulations Summary

AspectMustache Regulation
Length and BulkMust not cover the upper lip or extend sideways beyond a vertical line drawn upwards from the corners of the mouth.
StyleHandlebar mustaches, goatees, and beards are not authorized.
ColoringNo eccentric or faddish colors
Non-compliance PenaltiesRanges from counseling to UCMJ action
Religious AccommodationIt may be granted upon request, but it must be neat and clean.
AR 670-1 Mustache
George N.