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BPC 157 is a pentadecapeptide known for its systemic effects, while [TB 500 Thymosin Beta 4]( is a different peptide studied for its role in cellular migration and regeneration
AHK-Cu is the lesser-studied sibling of GHK-Cu, and most of what gets said about it especially on the skin side is borrowed from GHK-Cu's much larger literature by analogy, or comes from cosmetic-formulation studies run by the companies selling it
pH (5.0-7.0),
GHK-Cu increases collagen and elastin formation in skin cells, which helps improve skin firmness and elasticity
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