Yes, non-natural hair color is not a protected characteristic, but there are some vital things to keep in mind before establishing a policy on this:

1. “Extreme” hair colors are on the rise, so strict color restrictions could impact employee morale and limit your potential hires.
2. Remember to accommodate any hair coloring related to religious practices or cultural norms.
3. Defining what’s allowed and what’s not (e.g., vibrant auburn vs. rainbow red) can be challenging, so prepare for this and ensure consistent policy enforcement.

While employers can set dress codes, it’s essential to have a valid business reason for restrictions. If neon pink hair feels unprofessional but won’t affect your bottom line, consider letting employees express themselves.