Description Salicylic Acid 2% Solution is a water-based serum made with an optimum concentration of salicylic acid which targets textural irregularities while removing dead skin cells that can clog pores. And because it promotes exfoliation, this solution helps visibly reduce congestion, giving way to brighter, clearer skin. Suitable for use by teenagers with blemish-prone skin. In your regimen Prep Step 2: Treat Seal Use after cleansing, before anhydrous serums, oils, suspensions or creams.