International Research Services

International Research Services (IRSI) is a leading contract research organization (CRO) specializing in the clinical testing of dermatological products, cosmetics, and personal care items. Founded in 1977 and headquartered in Port Chester, New York, the company provides a wide range of services including safety testing, efficacy studies, and claim substantiation for global brands. IRSI operates state-of-the-art clinical facilities and maintains a large database of study participants to support diverse testing requirements. In 2017, the company was acquired by Eurofins Scientific, integrating its expertise into Eurofins' global network of cosmetic and personal care testing laboratories. The firm is particularly well-regarded for its biophysical skin measurement capabilities and its long history of supporting regulatory submissions for topical products.