S.C. Code Ann. § 61-4-90
It is unlawful for a person to transfer or give to a person under the age of twenty-one years for the purpose of consumption beer or wine at any place in the State. A person who violates this section is guilty of a misdemeanor and, upon conviction, must be fined not more than two hundred dollars or imprisoned not more than thirty days. A person found guilty of a violation of Section 61-6-4070 and this section may not be sentenced under both sections for the same offense.
The provisions of this section do not apply to a spouse over the age of twenty-one giving beer or wine to his spouse under the age of twenty-one in their home; to a parent or guardian over the age of twenty-one giving beer or wine to his children or wards under the age of twenty-one in their home; or to a person giving beer or wine to another person under the age of twenty-one in conjunction with a religious ceremony or purpose if the beer or wine was lawfully purchased.
The provisions of this section do not apply to a person who gives, serves, or permits to be served any beer, ale, porter, wine, or other similar malt or fermented beverage to a student under the age of twenty-one if: