The first Clinically Kind® resurfacing booster made for sensitive skin. Our Smooth Booster Willow Bark Exfoliating Serum is a vegan, concentrated serum powered by willow bark extract, caviar lime and lactic acid, and is safer for sensitive skin than traditionally irritating AHA and BHA skin resurfacing treatments. Benefits: Smooths & resurfaces appearance of rough & bumpy skin Exfoliates skin’s surface revealing younger-looking skin Safe for sensitive skin