This treatment helps neutralise free radicals, aids in detoxification, boosts immune function, and improves skin clarity all in one approach [1] [2]
The copper ion in GHK-Cu is sensitive to oxidation and light in ways that unbound peptides are not, which is why the handling recommendations for GHK-Cu include a few considerations beyond standard peptide storage protocols
Amino Acids 49, 13651372
SinhaRSinhaICalcagnottoATrushinNHaleyJSSchellTDet al
The one human trial that will measure tolerability directly has not started reporting it is only recruiting (planned 2026), studies a topical gel on small standardized wounds , and lists safety as a secondary, not primary, outcome (NCT07437586)
Its produced endogenously, meaning the liver makes it continuously