If a product goes out of stock during a promotion, can I apply the code when the product is back in stock? August 13, 2019 21:39 Updated Gifts or discounts can only be applied to items that are currently in stock, and only for the duration of the promotion. Related articles Can I cancel or modify an order once it has been placed? Maximum Purchase Quantity What type of currency is used on this website? What forms of payment does Tatcha accept? When will I be billed for my purchase?