Excess sebum, stress, tobacco, pollution - there are countless factors that cause your pores to become dilated and distorted. Sébium Pore Refiner: A correcting concentrate improves the skin's appearance. Its texture becomes finer, more regular and clearer, and pores are tightened and less visible. The FluidactivTM exclusive patented complex biologically regulates sebum quality, which keeps pores from becoming clogged and limits the formation of blemishes. Agaric acid, a powerful astringent, tightens pores and refines the skin texture Anti-oxidants preserve the skin's natural radiance.