The shop is now on track, and Li Yu is relatively free, so he remembers what he promised to Taining and Yingxue that day.

All-natural green pollution-free lip velvet has been done, and there are still hand fat and facial fat that have not been successfully researched.

By the way, there is also soap. Although the soap acacia has good decontamination ability, the unique grassy smell of plants does make people feel uncomfortable.

It’s better to be the industrial age. The chemical factory can make you taste whatever you want.

Unlike today's agricultural society, the smell can only be natural.

Unfortunately, my soul came through, and I had no search engines or encyclopedias in my mind, and I had no system and other things.

All you can rely on is the general education you received in your previous life.

Fortunately, I haven't completely returned the physics and chemistry to the teacher in high school.

These days, Li Yu will also think about how to make facial fat, hand fat and soap when he is free.

After these are made, not only can Taining and Queen Zhong please Tainan, but it is also a new profit growth point for Pinghuapu.

Li Yu used his previous experience to make a long-term layout in the operation of the shop.

First, we relied on relatively cheap boxed colorless lip garlic, with a buy-one-free sales strategy and thirsty marketing to open up the market and establish a high-end brand effect.

After two or three months of sales, this small market should reach saturation.

As the weather gradually gets hotter, the shop's business will naturally decline a lot.

This is a great time to open the branch of the Dongdu Jiangdu and Nanchang in Nandu.

First, some experienced eunuchs and palace maids can be drawn to support Xinshou during the off-season. Second, the popularity of Jiangning should also be blown to other parts of the country after a period of time.

At this time, Jiangning Headquarters Store will launch high-end lip velvets with pipe installation as an upgraded alternative.

This is sold purely as a luxury item.

Originally, Li Yu wanted to create various lipsticks, but he would never dare to use cinnabar.

Mercury sulfide, this thing is more toxic than lead, and it is applied to the lips and will inevitably fall into the stomach...

In ancient times, various colors of flowers were often used as a source of pigment, but the color was extracted by alcohol. There was no highly distilled liquor at present, which is one of the problems.

Secondly, when you have color, you have to consider color. When he was a child, he and his childhood sweetheart neighbor girl dyed his nails with impatiens, and at that time he used alum to fix the color.

Alum is sold now, but he has no idea whether it will have chemical reactions with beeswax or other things and has to continue to test.

So once the lip bulb is not attractive to everyone's interest.

The facial fat and hand fat will become new profit growth points. According to Li Yu's estimate, it will be around September. As the weather gradually turns cooler, the facial fat and hand fat should be very popular.

Back to Chengxintang, I asked my subordinates to make a cup of tea, and after drinking a few sips, I will use it as a way to relieve my energy.

Then he came to the cosmetics manufacturing department under Liu Zhong's charge.

It sounds pretty good in name, but Liu Zhong is a commander from beginning to end.

From ingredients to filling, he was doing it alone.

Li Yu felt that he was so tired, so he asked him to find a few acquaintances to help.

Anyway, through the split preparation method, each person is responsible for a short process and keeps each other confidential, so that the formula and preparation methods of the lip can be leaked.

But after considering it, Liu Zhong declined Li Yu's kindness. His point of view was very clear, because this thing really had no technical content, it was nothing more than honey, tea oil, and beeswax mixed in proportion.

If you really let others intervene, as long as you are interested, you can guess the raw materials.

As for the coordination ratio, it can be successfully reversed by experimenting a few times.

The lower lip flower is the source of wealth of King Anding and must not be revealed.

Therefore, he did everything himself.

Fortunately, there are various skilled craftsmen in Chengxin Hall who have made many special equipment and tools for him, which can reduce the intensity of labor. Otherwise, I was afraid that he would be exhausted.

Even so, Liu Zhong was still sweating profusely.

Seeing Li Yu coming in, he hurriedly greeted him.

Li Yu was also very moved when he saw this, but the supply was still in short supply, so he could only let Liu Zhong pay attention to rest and not be exhausted.

I turned around and entered a laboratory designed specifically for myself.

Through memories of high school chemistry, Li Yu had to do three things: facial fat, hand fat, and soap at one time.

I have passed all the materials prepared in advance.

A lot of wood ash.

Yu asked to make it clear that the wood ash cannot be burned with ordinary tree straw, but must be made of aquatic plants as raw materials.

For a prince, this is not a problem at all. There are Yangtze River outside Jiangning City, and there are many lakes in the city. After a command is given, a young eunuch will naturally bring a handwritten order to buy it from the public.

The wet cart of water plants was la Chengxintang, and found an open space to spread it out and dried it, and threw it to Li Tingsi's ink making office.

Lao Li had to make fire and burn rosin all day long, and he had a complete set of calcination and collection equipment.

Two days later, Li Tingsil sent two large buckets of this aquatic ash.

The reason why we emphasize aquatic plants rather than trees is Li Yu's helplessness.

It is best to use sodium hydroxide, that is, soda ash, to make soda, but the difficulty of manually preparing three acids and two alkalis is not much different from directly working on a computer.

Fortunately, I watched Verne's "Mysterious Island" in my previous life. I remember that it specifically mentioned that the content of sodium carbonate and sodium bicarbonate in the ashes burned by aquatic plants is relatively higher. So I can only make do with the local method to get started.

He called Liu Zhong and asked him to scoop out a large basin of water and grass ash, pour them all into a white porcelain basin filled with water on the fire, and stir slowly evenly.

After a basin of water has turned black and gray by aquatic ash, filter it repeatedly and filter the ash residue away, leaving only the light black and gray sodium carbonate and sodium bicarbonate solution.

Continue to heat the fire and let the water vapor evaporate the part. Li Yu scoops out the part from it and puts it aside, then pulls the basin off the stove and puts it in a larger water bath.

At this time, the solution had reached saturation. Just now, after filtering and steaming, only half a basin of water was left.

Li Yu estimated, scooped out almost a quantity of coconut oil from the wooden barrel beside him, poured it slowly into it, and ordered Liu Zhong to stir it desperately.

The alkalinity of sodium carbonate and sodium bicarbonate is much worse than that of sodium hydroxide, so the reaction time is also very long.

Seeing Liu Zhong working hard, Li Yu shook his head. It was really troublesome to do something in this era.

This coconut oil cannot be bought on the market. It was because the merchants under Li Jingchang racked their brains and finally dug out a few buckets from the corner of a certain shop warehouse.

It was a souvenir given by a customer when a merchant went to Nanhan Kingdom to do business. He was embarrassed to not want it, so he brought it back to Jiangning.

However, dishes fried with coconut oil can cause throat irritation and can easily lead to diarrhea. If you feel it is too luxurious for daily lubrication, you will be forgotten over time.

Now that I heard that King Baoning wants to give it to him, I quickly offer it to him like a treasure.

I have also seen several female friends with DIY soap in my previous life, so I still remember the general formula steps.

In fact, it is okay to use other oils instead, but coconut oil has the highest saponification value among natural vegetable oils.

It is used to make soap and has the highest reaction efficiency, and the finished product is harder and has a beautiful light yellow color, which is easy to please the customer group.

What he thought was pretty good, but he forgot that the raw materials of DIY in his previous life were all products of large industries. Whether it was alkali, baking soda or caustic soda, they were all beautiful white crystals with extremely high purity. The soap made of mixed milky coconut oil was naturally fair and beautiful.

At present, the black and gray solution is mixed with milky white coconut oil...

It's really like a ditch abandoned water...
Chapter completed!