How to check the date of Youtianlan mask? What does the 1-time and 3-time points of Youtianlan mask mean?

As we all know, food has a shelf life. When we shop, we will carefully look at the production date and shelf life. Similarly, skin care products also have a shelf life. So, how do you check the date on the U-Tianlan mask?

How to read the date on the U-Tianlan mask

Although Youtianlan does not mark the production date and shelf life, the product itself generally has a batch number to indicate the production date. When we know the production date, we can naturally calculate the shelf life of the Youtianlan mask. The batch number of Youtianlan facial mask is on the back of the product packaging box. There is an area on that side marked with the product batch number. The batch number of Youtianlan facial mask is a 5-digit number composed of letters and numbers. You can see it clearly as long as you turn to the back. The first letter of the Youtianlan batch number is its order in the alphabet, which is the year of production, for example, P is 2016, Q is 2017, R is 2018, and so on. The second letter represents the month, A represents January, B represents February, and so on. The last two digits are numbers, which are the specific date.

Interpretation of the U-Tianlan Mask Date QBM21 and QE113

QBM21 represents the product produced in February 2017, QE113 represents the product produced in May 2017, and the last few digits are the production batch numbers. How to read the date on the Youtianlan mask: the first letter represents the year, and the second letter represents the month. The following is the production batch number. If the first letter is Q, Q is the 17th among the 24 English letters, so it means that the product was produced in 2017. B ranks second, so it was produced in February, and E ranks fifth, so it was produced in May.

What does 1-time and 3-time of U-Tianlan mask mean?

1-time split means it is used once, 3-time split means it is used three times.

What should I do if the U-Tianlan mask does not have a production date?

If you don't see a production date or expiration date on the inner or outer packaging, this kind of thing does not have a production date or expiration date in Japan. This is legal in Japan. It means that it can be stored for many years if it is unopened in a light-proof, non-extremely humid, non-extremely hot or cold environment. After opening, use it up as quickly as possible.