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UPDATED: Review: NIOD Copper Amino Isolate Serum 2:1 (CAIS2) and CAIS3 – Fifty Shades of Snail
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Product question] My Deciem Niod copper serum (CAIS 2:1) turned dark gray, is it safe to continue using it? (I still have the full bottle of it 😱😭) : r/SkincareAddiction