S.C. Code Ann. § 39-1-55
(C) A condition relating to the use of a gift certificate must be stated clearly on the certificate, the envelope, or covering of the certificate, or the receipt given to the purchaser of the certificate, if the condition provides that the certificate decreases in value over a period of time or that a fee is charged against the balance of the certificate after a certain period of time.
A gift certificate that does not state clearly a condition described by this subsection may be redeemed at any time for the original value of the certificate, less any amount charged against the balance of the certificate by the consumer.