What hair colors are considered unauthorized for soldiers?

The answer highlighting that any unnatural colors are unauthorized for soldiers is based on Army regulations that emphasize maintaining a professional appearance. Unnatural colors, such as bright greens, blues, pinks, or purples, do not align with the military's standards of uniformity and discipline. The aim of these regulations is to ensure that all soldiers present a cohesive and professional image, which is important for fostering unit cohesion and maintaining a serious demeanor in military environments.

In contrast, natural shades of brown and black are explicitly allowed, as they reflect the typical hair colors found in the general population. Similarly, moderate highlights can be accepted if they do not deviate significantly from the soldier's natural hair color, and subtle hair dyes may also be permissible as long as they blend appropriately and remain understated. The focus on maintaining traditional, natural appearances helps reinforce the Army's core values and enhances the professional atmosphere expected within military ranks.