Here are some examples of hairstyles being regulated by societal norms ¹:

- In ancient Egypt, Greece and Mesopotamia, hairstyles often signified one's social status and role in society.
- During the Middle Ages, the Christian church played a significant role in shaping hairstyles. Women were expected to cover their hair as a sign of modesty.
- The Victorian era brought its own set of strict social norms, reflected in hairstyles. Women wore their hair in tight buns or elaborate updos, while men's hair was often kept short and well-groomed.
- During World War II, people needed styles that would not get caught in machinery or be in the way in general. Those in the armed services had rules to follow.

Throughout history, hairstyles have often been regulated by law or societal norms, reflecting cultural, religious, and political values. Here are some historical examples:

1. **Sumptuary Laws in Ancient Rome**: In ancient Rome, sumptuary laws regulated various aspects of personal appearance, including hairstyles, to maintain social order and reinforce class distinctions. Certain hairstyles were reserved for specific social classes, and individuals were prohibited from adopting styles deemed above their station.

2. **Sumptuary Laws in Medieval Europe**: Similar to ancient Rome, medieval European societies had sumptuary laws that dictated who could wear certain hairstyles and accessories based on social class and wealth. For example, elaborate hairstyles adorned with jewels and accessories were reserved for the nobility, while commoners were restricted to simpler styles.

3. **Hairstyles in Imperial China**: During the Qing Dynasty in China (1644–1912), men were required to wear their hair in a specific style known as the "queue" or "pinyin," which involved shaving the front of the head and braiding the rest into a single long braid. Failure to comply with this hairstyle was considered a sign of rebellion against Qing rule and could result in severe punishment.

4. **Hairstyles in Colonial America**: In colonial America, strict Puritan beliefs influenced hairstyles, with men and women expected to wear simple, modest styles that reflected religious piety and humility. Elaborate or extravagant hairstyles were considered sinful and were discouraged or prohibited by societal norms.

5. **Hairstyles in Nazi Germany**: During the Nazi regime in Germany, certain hairstyles, particularly those associated with Jewish identity, were stigmatized and targeted for persecution. Jewish men were forced to shave their beards and payot (side curls), while women were often required to wear their hair short or adopt hairstyles that conformed to Aryan ideals of beauty.

These historical examples illustrate how hairstyles have been used as markers of social status, cultural identity, and conformity, with regulations enforced through laws or societal norms.