La Roche-Posay EffaclarDUO is a complete skincare product that combines 4 active ingredients to act on the two main symptoms of skin with imperfections: Severe localised imperfections: Niacinamide and Piroctone Olamine to fight against bacterial proliferation and eliminate imperfections. Pores clogged with sebum: the combination of LHA and Linoleic Acid unclogs pores while eliminating the accumulated dead cells responsible for blockage. These active ingredients are combined with soothing, anti-irritant La Roche-Posay thermal spring water to reduce redness. Paraben-free formula.