In Song Dynasty's Chicken Ribs, it was recorded that southern women used plant ash to soak and bathe for decontamination.

2. Taomi water

As early as the Zhou Dynasty more than 3000 years ago, people used Taomi water to bathe and decontaminate. It is said that it can not only decontaminate, but also has excellent health care function. This is a cheap and common early bath water.

Step 3: Gleditsia sinensis

Similarly, natural washing materials are widely loved by people. At the latest in the Southern Dynasties in Xiao Qi, someone sold Gleditsia sinensis exclusively. There are more than ten varieties of Gleditsia sinensis, and their decontamination ability is strong or weak. Gleditsia sinensis has the functions of lubricating, refreshing, removing dirt, removing greasy and cleaning skin, and is also a commonly used medicine in ancient beauty prescriptions. Washing clothes with Gleditsia sinensis will not change color or shrink, and the fiber will not be damaged. Taking a bath with Gleditsia sinensis can also dispel wind and dampness and treat skin cancer.

4. Fat beads

Fat bead, that is, whatever you find. According to Compendium of Materia Medica, the trees in the mountains are very tall, with branches and leaves like toon, and white flowers bloom in May and June, which are as strong as projectiles. The nucleus in reality is as black as the nucleus of a soap pod and as round as a pearl. /kloc-harvested in October/October, cooked, pitted, and mashed with wheat flour or soybean flour as bath medicine. Because it is actually like fat oil, children are as round as pearls, so it is named. According to the introduction of Chicken Ribs in Song Dynasty, there are few Gleditsia sinensis in the middle of Zhejiang, and "fat beads" are used for washing clothes in the bath. Every year in late autumn, people pick the pods, cook and mash them, add spices and white flour, mix and knead them into pills, which is called "soap".

5, pancreas, bath beans

It was recorded in Sun Simiao's "Forward Fang Yao" and "Forward Fang Yi" in the Tang Dynasty that pig pancreatic blood was washed, fat was torn off, ground into paste, and then bean powder and spices were added, mixed evenly and naturally dried to make bathing beans.

Who first thought of using pig pancreas to remove dirt? No one knows yet, but he must be a brilliant man. In the process of making bath beans, the pig pancreas was ground to enhance the secretion of digestive enzymes contained in the pancreas. Mixed soybean powder contains saponin and lecithin, which has the function of enhancing foaming power and emulsifying power, not only enhancing washing ability, but also moisturizing skin. It is a relatively high-quality detergent. Be popular with the upper class.

Later, people improved the production technology of bath beans. When grinding pig pancreas, sugar is added, sodium carbonate (soda ash) is used instead of soybean flour, and melted pig fat is added. After mixing evenly, it is pressed into a ball or block, which is called "pancreas". The pancreas is very similar to soap today in chemical composition. And there are many kinds of products, such as osmanthus, roses, etc ... which are very similar to all kinds of soaps with different scents today.

The pancreas in the Tang Dynasty played the role of chilblain cream. High-end products are called "face medicine" and "oral fat", which are used to smear the face and mouth. The palace will give it to officials in winter. In Du Fu's La Ri, there is a saying that "oral fat flour medicine is accompanied by kindness, and the jade tube is in the clouds". That's the truth. Dare to send labor insurance supplies in ancient winter.

High-quality bath beans are regarded as high-grade products, but doctors refuse to announce the formula easily, and because of their nobility, they are often only used for washing hands and faces. Li Tao's Secret Recipe of Foreign Taiwan in the Tang Dynasty has a detailed description: cream and hand cream are fragrant and bathe beans, and scholars win, and they all want it. However, today's medical practice is extremely secret and precious, and his children are not allowed to reveal a law. As for the legislation that the Father and the Son don't preach saints, we want everyone to understand that it is really strange that we should be ignorant on earth, make the Supreme Way impossible and cover up the meaning of saints.