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The careful answer is that they may support collagen, elastin, repair signaling, and inflammation control, but topical anti-aging trials are much thinner than the marketing often implies [1][2]
PMID: 29986520 Regenerative and Protective Actions of the GHK-Cu Peptide in the Light of the New Gene Data Loren Pickart and Anna Margolina* ~ Mol Ther
It also uses the brands patented repairing technology to repair broken and damaged disulfide bonds in the hair that contribute to shedding. What is better for thinning hair: biotin or collagen
GHK-Cu has a low molecular weight, allowing it to penetrate the stratum corneum and exert its effects directly on dermal and follicular cells
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