ghk-cu low immunogenicity or antibody formation risk An evidence-based strategy for assessing the of Implementing a Clinical Immunogenicity Strategy – The Exploring the Role of Tripeptides

GHK-Cu stands for glycyl-L-histidyl-L-lysine copper (II)

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Therefore, the conceptual evidence can be summarized as follows (Figure 1)

If Cosmetic Irritation Occurs Reduce cosmetic application frequency Lower formulation concentration Discontinue cosmetic use if irritation persists Cosmetic Application Considerations Patch testing is recommended before larger cosmetic application areas Avoid direct contact with eyes Avoid application to broken, compromised, or irritated skin Lower introductory concentrations are commonly preferred for sensitive-skin formulations For Cosmetic Formulation and Research Use Only Not for injection or human consumption

Many premium hair serums now include GHK-Cu as a key active ingredient, often combined with hyaluronic acid, niacinamide, or botanical extracts for enhanced penetration

A recent review on copper hypersensitivity concluded that copper is a weak sensitizer as compared with other metallic compounds 14