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If a "copper peptide" serum has no blue tint at meaningful concentration, the copper complex may already be dissociated Size:10ml Kojic Acid for Skin Delta-Sleep-Inducing Peptide (DSIP) – Phoenix Pharmaceuticals, Inc. http://www.kirkmangroup.com/cdn/shop/files/0822-002_bottle.jpg?v=1698525218&width=2048
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