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The higher effective dose from injection translates to more pronounced biological effects
GHK-CU vs topical copper peptides Topical copper peptide products (serums, creams) deliver GHK-CU through the skin rather than injection
Established clinical use Not established by this product page or its analytical documents
According to Medical Daily , the agencys own career scientists opposed loosening restrictions on several of these peptides, citing a lack of evidence supporting both safety and effectiveness
They isolated the protein responsible, then synthesized the active 15-amino-acid fragment
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