I purchased Yamanaka special and checked the product and found that sediment had accumulated. I shook the bottle and stirred it, but it does not mix. Is there any problem if I use it as it is?

The Yamanaka Special is a practical product that is designed to be used in a practical manner, with the visual element being of secondary importance.
However, there is no problem at all in terms of measured values and physical properties, and the same effect can be obtained even if the products are separated.
The product is used with strange odor, separation, and discoloration.