Cashback conditions How does a refund offer work? A refund offer is a promotional operation in which customers can be reimbursed for part of the product they purchased. PurchaseA refund offer is valid for a purchase made during a predefined period, on a list of eligible products. Participation formOnce your purchase has been made, you must complete the online form and attach all the required supporting documents. File processingOnce your application has been submitted, it will be processed within 5 weeks after the participation deadline. RefundIf your application is accepted, you will receive your refund within 6 weeks after the participation deadline.