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These vendors often market BPC 157 as a research chemical, and the product is typically synthesized in laboratories

Additionally, experts recommend avoiding harsh actives (e.g., retinoids, alpha-hydroxy acids, salicylic acid, etc.), vitamin C, or any active exfoliants while using GHK-Cu peptides

Clinicians and compounding pharmacists pushed back on the restriction for that reason

Related copper peptides (AHK-Cu) show high potency at extremely low concentrations, suggesting multiple copper-peptide variants may support hair growth through similar wound-healing and growth-factor pathways

Common Mistakes with GHK-Cu for Hair Mistake 1: Using 2% serum directly after microneedling

Before starting any new medication, you should always inform your healthcare provider about any other medications you are currently taking