According to Qian Jin Fang Yao, during the Tang Dynasty, people in the Tang Dynasty used pig pancreas and Gleditsia sinensis. Gleditsia sinensis Roxb. is made of various spices and herbs. He can't wash his face, wash his hair and take a bath with this special soap horn. Of course, this kind of soap contains a lot of alkalinity, which is not good for hair if used frequently, but in ancient times, people didn't wash their hair often, and this ingredient can ensure that they can be washed more cleanly every time. But everyone's hair quality is different, which leads to different users. This shampoo product gives people a different feeling. For example, some people use this saponin, and their hair will feel dry and not supple after washing. So some women came up with a good idea. They painted their hair with egg white. After wrapping for a while, wash the eggs. After that, the egg white will form a protective film on the hair, making the hair feel smoother and smoother at a time. This should also be regarded as a natural hair care product. In ancient times, ancient people also dyed their hair with various natural hair dyes. Some people want to dye their hair black to look young, while others want to dye their hair white to look older. The hair dyes used in ancient history and the chemical hair care products of Gentiana macrophylla used in modern times are generally made from local materials in ancient times, and all of them are made from natural materials. Although the effect of dyeing hair is average, it is safe and reliable. And ancient women. They also use hair oil when they lose different hairstyles every day, because many ancient women's hair looks shiny. It is also related to hair oil and regular maintenance. Another main reason is the problem of diet. In ancient times, it was difficult for them to get in touch with spicy and greasy food like this. It can be said that ancient people also ate healthy and pure natural food, which was also good for their hair. Excessive greasy food will definitely make hair more greasy, while light food will be much better for hair quality.