Why did the hairdressing industry flourish in the Song Dynasty, despite the ancient idea that "the body's hair and skin is the parent's"?

There are many explanations for why the barbering industry flourished in the Song Dynasty, despite the ancient idea of "body hair and skin".

First of all, it's a matter of history. Chinese hairdressing has a long history, and before the Han Dynasty, it had already begun to be born. Legend has it that hairdressing and cosmetology have arisen since ancient times, when Fuxi began to vertebrate buns, no longer emanate. Haircutting has been developed throughout the dynasties since then. In the Han Dynasty, there were artisans who shaved heads as a profession.

During the North and South Dynasties, the sons of the nobles of Liang in the Southern Dynasties cut their hair and shaved their faces. After thousands of years of development, the hairdressing industry itself is a certain impact on the "body hair, skin, from parents". At the same time, after so long development, the Song Dynasty barbering industry has been relatively mature, not only has a workshop specializing in the manufacture of barbering tools, and barbering gradually developed into a skill, an industry.

Another reason is that during the Song Dynasty, the economy flourished, not only did business develop well, but people's lifestyles, food, clothing, housing, and transportation all changed dramatically, and people's minds were greatly emancipated.

Chinese science, literature also reached its heyday in the Song Dynasty, which emphasized the cultural and educational industries and gave a lot of space to the literati. People cared more and more about their appearance, so people were already skeptical about the traditional idea of "body hair, skin, parents".

The prosperity of the barber industry in the Song Dynasty is itself an irreversible trend in history, people's minds are liberated, the constraints of traditional thinking slowly easing, people's social activities increased, people began to pay attention to their own image, the barber industry thus developed.

The explanation is probably only so much, if you lack, please add.