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The recalled product was distributed to customers nationwide from April of 2022 until December 8th of 2025

This isn't because 1:1 is mechanistically optimal in some provable way it's because researchers studying combinations of these compounds chose 1:1 as the default and the literature accumulated around that choice

They are being evaluated with the wrong tools

Key Takeaway: Research-grade GHK-Cu is verified by reversed-phase HPLC (purity) and LC-MS (identity), with full documentation provided on a certificate of analysis

Light Protection: As lyophilized peptides may still contain light-sensitive amino acids, they should be stored in dark conditions or in amber-colored vials to prevent photodegradation

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