Murad Outsmart Blemish Clarifying Treatment a lightweight soothing gel serum, clinically proven to reduce overall blemishes in just 1 week. Salicylic Acid combines with Lysophosphatidic, Hydroxydecanoic, Sebacic, & Glycolic Acids in Penta-Acid Technology to clear skin of blemish causing bacteria, oiliness & blackheads while minimizing dryness & irritation.