ghk-cu copper peptide hair growth mechanism scientific evidence benefits GHK-Cu peptide for hair: the

Caution is warranted when using the peptide alongside other compounds, particularly those affecting metabolism or cardiovascular function

The blue colour comes from the copper(II) ion coordinated to the peptide

The accurate description of the combination is not that it is weakly supported but that it is unstudied, which is a cleaner and more useful thing to write in a methods section

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One study, lasted a month, reported that GHK-Cu might stimulate type 1 collagen production in clinical settings

Human dermal fibroblast studies show up to 70% increase in collagen production at optimal 1 nanomolar concentration, with collagen IV showing 25.4-fold increase when combined with hyaluronic acid