Smooth Booster Willow Bark Exfoliating Serum - The first Clinically Kind resurfacing booster made for sensitive skin. Beekman 1802's Smooth Booster Willow Bark Exfoliating Serum is a vegan, concentrated serum powered by willow bark extract, which is a less irritating alternative to salicylic acid and is clinically tested to smooth skin.BenefitsSafe for sensitive skinExfoliates skin's surface revealing younger looking skinSmooths & resurfaces rough & bumpy skinKey IngredientsWillow bark breaks down into salicin which helps calm redness and irritation while deeply exfoliating skin.Caviar Lime has natural AHA properties that help increase the speed at which your skin sheds dead skin cells, helping prevent clogged pores and breakouts.Research Results97% saw smoother skin100% had zero reaction in sensitive skin & allergy testing100% saw softer skin - Smooth Booster Willow Bark Exfoliating Serum