Typically, Redbox promo codes are designed for one-time use only to encourage new customers or specific transactions. Each promo code usually has its own terms and conditions, which may specify whether it can be reused or applied to multiple rentals. Generally, once a promo code is redeemed, it cannot be reused for additional transactions. It is important to read the details associated with each specific promo code to understand its limitations and expiration dates. Occasionally, promotional offers may be available that allow for multiple uses, but these are less common. For the most accurate and updated information on promo codes, potential users may want to check Redbox's official website, as they often outline the terms associated with any active promotions.