i originally bought this product from official website, but failed. It looks like that if i don't have exact address in Japan, i can't buy from there. Fortunately i met a good empolyee to explain and let me know that i can buy from 樂天 instead. It doens't takes long time to wait. It's helpful to fall asleep but i found the validity is very short, only left few months. i was disappointed, which looks like the shop wants to clear the stocks and dispatch to foriengers. Becuase we can't return easily.