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According to a peer-reviewed clinical review in the National Library of Medicine summarizing GHK-Cus role in tissue remodeling and skin regeneration, the peptide has been documented in clinical research since the early 1970s and remains one of the most validated copper-binding peptides in dermatologic use
This means the peptide lacks the safety and efficacy validation that comes with full regulatory approval
Limitations: Limitations include lack of standardized reporting across included studies, variability in study outcomes, and limited long-term safety data
Keep the needle in your skin for at least 5 seconds to help you receive your full dose
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