Subject to availability. According to inquiries related to Yue Sai, we learned that Yue Sai products without boxes are sometimes genuine. This depends on where the channel is purchased from. Authenticity identification is based on the genuine plastic seal, which is in the middle of the back of the bottle. The color is lighter than the bottle body. The plastic seal is intact and sticky. There is the Yue-Sai trademark logo underneath. Authentic.