The production batch number is usually marked on the bottom of the cosmetic bottle or on the bottle body, and the batch number is generally three digits:

The first is the batch of products, which has no practical significance.

The second digit represents the month. The number1~ September is 1~9, and the month 10~ 12 is A, B and C.

For example, the country of origin is Canada, and the three digits of the batch number represent year+month+batch number respectively. Crazed 8G 1 means that the first batch was born in July 2008, and 5F 1 means that the first batch was produced in June 2005.

GY7 stands for production in July 2007 and GU8 stands for production in July 2008. At the same time, among the twelve letters of "A-L", the letter "I" is not used, because it is easily confused with the number "1", so the letters representing twelve months are "A~H" and "J~M" respectively.

Extended data:

Identification method of NARS production date;

Production date has two English abbreviations:

1, abbreviated as "PD", that is, the production date.

2. Abbreviation "MFD". Date of manufacture.

The validity period also has two English abbreviations:

1, abbreviated as "GP", is the guarantee period.

2. the abbreviation "Exp". That is, the validity period, the validity period.