Big Look is a subscription based service. Gift cards are applied to the recipient's account as a gift balance. This balance entitles the recipient to free access to Big Look membership with all features for 1 month, 3 months or 6 months.
To take advantage of the gift balance the receiver needs to set up a new membership account which requires payment details to be entered. No money will be drawn down until the gift balance expires. The recipient can opt to cancel membership at any time before the end of the period and avoid being charged any money.