Pure unit-conversion math for GHK-Cu (mg → mcg → IU on a U-100 insulin syringe). Half-life steady-state graph, cost-per-mcg comparator, shareable URL. Research use only — no clinical recommendations.
→ Open the GHK-Cu calculatorGHK-Cu is the copper tripeptide. Topical use is widespread (Pickart's work). Parenteral use is RUO-only. The skin-and-hair flagship in the category.
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Verify your vendor: See GHK-Cu COA scores at /coa-index.