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 When will I be billed for my purchase? International Shipping What forms of payment does Tatcha accept?