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Transform large pores, excess oil, and uneven skin texture with MaryenB NTZ20, the professional-grade niacinamide serum featuring industry-leading 20% Niacinamide concentration. This Korean skincare innovation combines 20% Niacinamide + 2% Zinc PCA + 2% Tranexamic Acid in a clinically-proven pore minimizing formula that delivers visible pore reduction and all-day oil control in just 4-6 weeks.