The new high-concentration Effaclar Serum is designed with a complex of exfoliating acids combined with soothing niacinamide, which targets blackheads, blemishes, scars and visible pores of acne-prone skin. Formulation that purifies and renews the skin. \ \ The ideal balance between exfoliating and soothing action, Effaclar Serum purifies pores and corrects persistent blemishes and scars. \ \ Innovation: the first La Roche-Posay care that combines a high concentration of active ingredients that act synergistically: \ \ Salicylic acid 1.5%: action against clogged pores caused by sebum accumulation. \ \ Glycolic acid 3.5%: enhancement of skin regeneration and high effectiveness against scars. \ \ lha 0.45%: smoothes the skin without causing intolerance and purifies the pores. \ \ niacinamide: also known as vitamin b3, improves the epidermal barrier, soothes and reduces the discomfort of sensitive skin. reduces pores and acts against blemishes. \ \ la roche-posay thermal spring water: soothing and anti-irritant action. \ \ effectiveness: \ \ -45% imperfections* \ \ -50% black spots** \ \ -49% marks* \ \ visible effectiveness from day 1: \ \ 83% the skin is softer and renewed. \ \ effectiveness in 14 days: \ \ \ 90% fine lines are reduced. \ 100% the skin is comfortable. \ 92% pores are less visible* \ \ \ texture and application: thin serum that is absorbed immediately and facilitates daily application. non-greasy and non-sticky texture. apply to the entire face in the evening, after cleansing with effaclar gel. \