2 to 5 business days
Twin Pack biw biw Melasma Dark Spot Correcting Serum actively brightens dark spots and hyperpigmentation without damaging or thinning skin. Our rejuvenating light texture formula directly and effectively targets dark spots and marks, while helping skin look radiant and smooth. Active ingredients Tranexamic Acid, Niacinamide and Glycolic Acid lighten dark spots and prevent reappearance, with visible results in 4 weeks, and continued improvement thereafter with regular use.