A cosmetic batch number is a series of numbers and/or letters that identifies all products of the same production.
For example, it allows the traceability of cosmetic products, if there is a problem with a product related to manufacturing or undetectable effects, it is enough to recall the batch number and not the whole production.
The batch number allows us to track down the person responsible and to identify problems more quickly (ingredient, manufacturing problem for example). It allows us to know when the product was produced, with what ingredients, under what conditions or who produced the product.
In the event of an extreme problem, it also allows us to recall all the products linked to this batch number in order to avoid the worst.