The Advent Calendar Promotion applies to the product(s) linked to the discount coupons. It lasts until December 24th, though obtained coupons can be used up until January 1st, 2023. Coupons obtained through the advent calendar promotion can be mutually combined (in one order) unless they pertain to the same product(s). In that case, the coupons with the lower % off are void and are substituted with the ones with a higher % off. If you have any other questions about the Advent Calendar Promotion, you can contact the customer service team through the chat widget or by sending an email to:customerservice@creatingperfume.com.