S.C. Code Ann. § 44-34-60
(B) Each tattoo facility location must conspicuously display in a public area on the premises of the licensed tattoo facility:
(C) A tattoo artist must verify by means of a picture identification that a recipient is at least twenty-one years of age or, if the person is at least eighteen years of age, has parental consent. For purposes of this section, "picture identification" means: