It seems that ｔhe expiration date is long, Do you use the synthetic preservatives?

We use the citric acid and the rosemary extract which are a natural antioxidant without using the synthetic preservatives. It costs but adopts it because suppressing the oxidation of the food as much as possible is important.

In addition, a lot of polyphenols is contained in the ingredients which we use. These show an effect for not only a good effect on the health maintenance but also the oxidization prevention.

Our products were adjusted to be able to use for a month after opening. However, please keep in dry and dark place after letting air as much as possible and sealing it up. Also, please use our food early as much as possible because the natural preservatives are low antioxidant effect than the synthetic.