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ghk-cu downregulates nfκb The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline GHK-CU Making Skin Worse: Complete
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Combination significantly superior

Here's the key distinction: 90472 can't exist on a claim without 90471

doi: 10.1507/endocrj.k09e-117
Some brands offer specific eye-focused copper peptide products with gentler formulations, though full-face serums generally work fine around the eyes

2017 Jun;64(6):673-674 Koratala A, Chamarthi G, Segal MS

Type 2 diabetes in adults: management (NG28) Recommendations chapter
