iS Clinical is a professional skincare brand from the California company Innovative Skincare, known for high-potency, science-led formulas sold through physicians, spas, and authorized retailers. Its range spans cleansers, serums, moisturizers, eye care, and peels, and its best-known products are the Active Serum, the Cleansing Complex, and the Super Serum Advance+. It targets aging, blemishes, uneven tone, and hydration.