LOreal Paris Prime Lab Advanced Derm Primers are a collection of skin-loving primers that extend makeup wear for up to 24H and visibly improves skin over time. Formulated with tried-and-true skincare ingredients, each primer targets a specific skin need with its unique formulation. Redness Eraser with Niacinamide to neutralise the look of redness for fair to medium skin tones. Find all primers. Pore Minimizer with AHA, LHA, BHA Complex to refine the look of skin texture. Matte Setter with LHA plus Salicylic Acid to rebalance skin. The Dullness Reducer with Niacinamide instantly corrects dullness for tan to deep skin tones. These formulas are dermatologist tested for skin safety, non-comedogenic so they wont clog pores, and paraben-free.