Lierac Sebologie Double Concentrated Imperfections, with Zinc Gluconate and Salicylic Acid, helps to regulate sebum production, refine pores and eliminate imperfections and residual stains present on the skin of the face. It has two jointly formulated formulas that provide a radical solution against skin imperfections - With defensive action by day, thanks to anti-pollution and anti-seborrhea agents, which provide a skin with a refined texture and no shine all day long - It also has nocturnal action by acting on collagen synthesis, helping to improve the skin's architecture and thereby reducing the pore diameter.