Exclusive Chaga tea of Rejuvenation System

We have continued to pursue the true beauty of health and celebrated the 20th anniversary of the spring of 2020 as a company. For a long time, we have been using Chaga for our supplement ingredient. We made Chaga tea, "RETHÉ" by incorporating our original method. Please enjoy it as a tea you can savor everyday. The cells of Chaga are rich in the blessings of the strong vitality nurtured by the harsh nature of Russia. However, the cell wall of Chaga is extremely hard, we can not absorb and digest the nutritions of Chaga as it is wrapped in the hard cell wall. "RETHÉ" is produced by our original method using a patented manufacturing method so that we can fully absorb Chaga's vitality, the blessing of nature. Needless to say, Chaga is good for health and beauty, as mentioned in various literature.However, due to recent environmental problems and accidents at nuclear power plants in Russia and Japan, it is undeniable that Chaga contains dangerous and harmful substances, because it grows in natural environment for 10 to 20 years.


Chaga Tea RETHÉ's commitment to safety and security (Thorough analysis and inspection)

Since we drink it every day, we are particular about the safety of our products. We promise that we will only sell products that have been confirmed to be safe by inspection at Japan Food Research Laboratories.


Inspection based on Ministry of Health, Labor and Welfare guidelines

Chaga, the raw material of RETHÉ, is a mushroom. Mushrooms are known as foods with high levels of detection of radioactive cesium. As of the end of March 2020, many mushrooms are also listed as subject to shipping restrictions in the list of foods subject to shipping restrictions based on the Act on Special Measures Concerning Nuclear Emergency Preparedness.
Measures and current status of radioactive substances in food (Japanese only)
34 years (as of 2020) have passed since the Chernobyl nuclear accident in April 1986. Although the regulated nuclide, cesium-137, has finally reached its half-life period, it goes without saying that the amount of radiation emitted is only about half, and it still affects the human body. Russia, which is the origin of Chaga, is an area where the effects of Chernobyl-derived nuclides are a concern, so careful inspection is required.
Because RETHÉ is used as tea, the standard value is applied based on the data of the Ministry of Health, Labor and Welfare, "tea conforms to the standard value of drinking water after drinking after being manufactured and processed." Specifically, the passing standard value is 10 becquerels or less per kg, which is the standard for drinking water.


Radiological test results and 450 agricultural chemicals test results

Chaga grows naturally on birch trees and grows over 10 to 20 years. Over the years, unexpected accidents at nuclear power plants in Chernobyl and Fukushima and pollution such as PM2.5 due to environmental problems may cause Chaga to contain invisible harmful substances, There is a risk that it may be harmful to you, such as chemicals stored later. Because it is a natural product, we test 450 types of pesticides and detect radioactive substances for each production.

Chaga tea RETHÉ inspection flow

Chaga tea RETHÉ is a unique blend of Russian Chaga and Chaga's cell wall destruction powder, which is packaged in non-woven tea pags and packed into 30 packs. We pay close attention to imports and manufacturing, but we will request inspection from the finished product. The procedure for inspection is to randomly select 20 packs from the finished product and remove 1 pack from 30 packs. This is done in 10 packs, 10 packs are taken out and boiled in 10 liters of water, divided into 1 liter (1 kg) each, and we request Japan Food Research Laboratories to inspect it.


Charm of Chaga, SOD enzyme activity

At Chaga Tea RETHÉ, we thoroughly inspect and analyze the ingredients used in our products and, as is the policy of the Rejuvenation brand, we are committed to improving the highest quality and delivering them to you with the correct information.

The activity level of SOD enzyme is only about 1000 units in ordinary chaga chopped tea. (According to our research)

Normal chaga-topped inspection data

The SOD enzyme activity far exceeds 35,000 units by processing Chaga extract powder and cell wall destroying powder, and the test data recorded 41,000 units this time. (According to our research)

Test data of Chaga extracts and cell wall breaking powder

The great feature and attraction of Chaga is its surprisingly high SOD activity. As shown above, the SOD unit of Chaga is only about 1000 units of SOD enzyme activity. So what kind of thing is Chaga with 35,000 units, which is 35 times higher? The powder obtained by concentrating and drying the liquid boiled out of chopped chaga is the extract powder. One gram of the powder has SOD activity power of over 35,000 units. Of course, the powder which has 35 times the SOD activity power of chaga is very expensive. In our company's RETHÉ, we added the original processing of the extracts and the cell wall destruction powder, which is also a patented manufacturing method, to the original processing, and realized the strong SOD activity power of 41,000 units, which is not possible only with the chopped chaga, and a round taste with deep and rich flavor.

Using the cell wall destruction powder

The β-D-glucan contained in Chaga has a structure that is a polymer in which many sugars are linked like a chain. Hence it has the character of being difficult to dissolve in water even when it is boiled. Destroying the cell wall of Chaga, is a special patent method which is done only by our company. This action allows the nutritions such as: β-D-glucans to be absorbed in the water. Once it has been absorbed in the water, it can be fully consumed and digested.

Difference between crushed powder and destroyed powder


The crushed powder is a hard Chaga which has been crushed into a powder form. As you can see by comparing with the micrograph, the fiber remains the same state. The difference with the cell wall destruction is that you can not consume the nutritions such as; SOD enzyme and β-D-glucan. This is due to the method which crushes from the outside of Chaga’s cell.


The cell wall destruction powder is a special process that destroys the hard cells of Chaga by applying pressure from the inside. As you can see from the micrograph, you can identify that the cells are finely broken into minuscule particles. The solid cells of Chaga contains various valuable nutrients such as β-D-glucan, lignin, and polyphenol, as well as SOD enzyme.

Our exclusive manufacturing method ・(Chaga cell wall destruction powder)

The cell walls of Chaga are so hard that they cannot be consumed and digested. In order to efficiently dissolve the nutrient components of Chaga in water, the cell walls of Chaga has been destroyed using special machinery and technology. By destroying the cell walls, various nutrients such as SOD enzyme, β-D-glucan, lignin, inositol, flavonoids, dietary fiber, minerals and vitamins will dissolve in water. After this process, you can enjoy the benefits of Chaga.

Before destruction
After destruction