Brighten and even your complexion with SNP Glutathione Dark Zero Toning Patch! STEP 1 Niacinamide : Reduces the transfer of melanin to the skin's surface. STEP 2 99% SNP Glutathione Dark Zero Toning Patch 60EA [Parallel Import] (Random packing) StyleOne K Beauty, EVERGREEN SNP Glutathione Dark Zero Toning Patch 60P Double Pack (OY Exclusive) OLIVE YOUNG Global The Glutathione Dark Zero Toning Eye Patch is a new functional eye patch product from SNP, a hyperactive derma brand established in 2008. The Glutathione Dark Zero Toning Eye Patch is designed