SCOPE

This chapter provides general information about developing in vitro performance tests to evaluate drug release or skin permeation for topical and transdermal semisolid and liquid-based dosage forms, including but not limited to, creams, gels, ointments, pastes, suspensions, lotions, and foams. For information related to in vitro performance tests that evaluate drug release for transdermal delivery systems (TDS), refer to Drug Release 〈724〉.