Anyone dealing with dullness or uneven tone might notice a difference with niacinamide serums like this one, and at $12.34, it's about $9.56 off the $21.90 list price on Amazon via coupon code "25VOEWVNH4". Deal ends September 16. Buy Now at Amazon Features 20% niacinamide and glutathione brighten and fade discoloration Deep hydration formula provides dewy radiant glow Clinically proven to improve smoothness and radiance Reduces dark spots and calms visible redness Non-irritant formula safe fo
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