ghk-cu reddit peptide PSA] Albeit rare Copper "uglies" are real and scary. Case report and looking for advices : r/SkincareAddiction TOSOWOONG Copper Peptide 12 Cream,

2017;20:e36e37

Extended Half-Life: Providing a prolonged experimental window for chronic, long-term animal longevity and weight loss trials without inducing receptor down-regulation artifacts

Absorption differences: injection vs topical Subcutaneous injection absorption: Rapid absorption into bloodstream Peak plasma concentration: 15-30 minutes 80-90% bioavailability Reaches target tissues quickly Systemic distribution Topical application absorption: Slower penetration through skin barrier Peak tissue concentration: 1-3 hours 5-15% bioavailability (most doesn't penetrate) Primarily local effects (skin where applied) Minimal systemic exposure Absorption comparison table: Why injection more effective: Direct systemic delivery Reaches all tissues Predictable dosing Lower total dose needed Better for body-wide effects When topical makes sense: Face/neck cosmetic use only Avoiding injections Already using skincare routine Combining both approaches (injection + topical) See our GHK-Cu 50mg copper peptide dosage guide for injection protocols

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Oil-based options like Biossance squalane formulation excel for dry skin