Earth Rhythm 2% Salicylic Acid - Sebum Control Serum is an oil-free, soothing serum ideal for tackling the concerns of skin that is prone to impurities. Salicylic acid counteract impurities whilst willow bark extract provides a soothing and healing effect. The partner in crime you need to fight breakouts and blemishes, this serum helps to exfoliate the skin, penetrating deep into pores to help break up trapped dirt and sebum to prevent the formation of new blemishes. Infused with willow bark extract to enhance exfoliation and promote a smoother, clearer complexion.