Everyone must be familiar with the shouts outside the door. We often see these people holding scissors, pushing cars, collecting hair everywhere and cutting people's hair. We only know that long hair is more expensive, but we don't know what they do with our long hair.

Nowadays, with the development of society and the improvement of people's living standards, it is increasingly difficult to see people walking around the streets collecting their hair. Now people are more willing to go to barber shops for haircuts. Our cut hair was swept into a pile by the barber. We usually think that we have thrown them away, but in fact they are not. Generally, people who collect their hair will pay more attention to the barber shop and collect their hair from there. So what's the use of these collected hairs?

In fact, some taken hair is forbidden to enter some processing factories, be made into wigs and sold abroad, or some barber shops. Some people abroad like wigs and connect their hair. Of course, some people in China use wigs. Some of them are processed into tools for beauty salon students to learn skills and exercise skills. These hairs are generally of poor quality.

In addition, human hair contains 28 amino acids, which will be processed into animal feed. Didn't you think our hair was so useful? When it comes to the nutritional value of hair and its 28 kinds of amino acids, some "black-hearted" manufacturers will make their hair into soy sauce, yes. But these soy sauces are inferior and have no brand. As long as we use soy sauce with brand and reputation.