Just enter the 16 digit code into the gift voucher section of the ‘Wallet’ on your ASOS account and click ‘Add’. Once the voucher has been added to your account, it can’t be transferred to another account. You have 12 months to spend the whole amount of your gift voucher although you don’t have to spend it all at once. When you want to buy something using your gift voucher, it will automatically appear when you reach the checkout. Just click ‘Redeem Voucher’. It may ask you to enter the 16 digit code before the order completes.