What is the date of the bottom of Tianqidan bottle?

The bottom date of Tianqidan bottle is the production date. Generally, the shelf life of skin care products is three years without unpacking, and it is recommended to use them within one year to one and a half years after unpacking. Most Korean cosmetics will be marked with the date of production, not the shelf life. The date letters on the bottom of the bottle are in the form of ink jet, which is also relatively clear.