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Calcium ions promote formation of amyloid -peptide (140) oligomers causally implicated in neuronal toxicity of Alzheimers disease

One reason topical GHK-Cu efficacy varies so much between users is that the peptide struggles to penetrate intact skin

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It is commonly used off-label in oral form to support hair health, and is believed to increase blood flow to hair follicles and extend the hair growth (anagen) phase

Petrovic et al., 2021

One notable change is the accumulation of CD8 + T cells that express senescence markers such as CD57 and the T-cell immunoreceptor with Ig and ITIM domains (TIGIT) [311]