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Oncotarget 8 (4), 57615773
Every supporting citation is single-compound
doi:10.1001/jama.2023.16620 Gulak MA, Murphy P
10.1194/jlr.R076331 47 GuoJ
GHK-Cu (copper peptide) is widely considered the best overall peptide for hair growth due to its multi-pathway mechanism, strong research backing, versatile application methods (topical and injectable), and excellent safety profile
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