Batch code is a code which is stamped or printed on the package of your cosmetics product. It includes information of production time and factory. As explained by "The Body Shop" company - "This code enables full traceability to either bulk manufacture or date of production."
Every company has their own format of batch code. It is hard to remember every format yourself. That's why I developed this cosmetics prodution date calculator to help you.
Select a brand of your cosmetics, and write your batch code. Then the Cosmetics Wizard calculator can decode the batch code for you.
If you find a 13-digits code like 3 145891 43040 together with bar, it is not a batch code. It is a normal barcode which is to define a kind of product. There is no production date information included in the barcode.