Salicylic Acid (BHA) is derived from willow bark and has anti-inflammatory and antibacterial properties. Since it is oil-soluble, it can penetrate the pores and dissolve excess sebum and debris. Its general exfoliating effect helps the skin appear brighter and smoother, and also allows other skincare products to penetrate more effectively. Salicylic acid is keratolytic, meaning it chemically exfoliates the upper layer of the skin, helping to remove dead skin cells, clear clogged pores, reduce sebum production, and assist in eliminating acne and comedones.