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TB4 fragments Fragments of thymosin beta-4 are sometimes examined in preclinical settings due to their reduced size and theoretical stability advantages
The Hostynek and Maibach group at UCSF measured exactly this in 2011: human skin permeation of GHK-Cu as a function of skin layer, with the result that the peptide accumulates in the upper stratum corneum but does not pass through to viable epidermis or dermis in any meaningful quantity 4
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May Support Hair Growth Research has investigated GHK Cu's potential effects on hair follicles, with studies exploring its role in supporting hair density and growth
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