Prime Lab Redness Eraser with Niacinamide to neutralize the look of redness. L’Oreal 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 makeup primer targets a specific skin need with its unique formulation. These formulas are dermatologist tested for skin safety, non-comedogenic so they won’t clog pores, and paraben-free.