A.
Because inks of Prinker are manufactured by cosmetic ingredients, it is not recommended to use the cartridge after the expiration date indicated on the sticker on the side of the cartridge. If the expiration date has passed, we recommend that you purchase a new one and use it.
Also, as described on product details, the cosmetic ink expiration date is after 2 years from manufacturing date or 6 months after starting use.
The expiration date will be based on the day that comes first between them.