This compound is none other than glutathione, a tripeptide made of three amino acids: cysteine, glutamate, and glycine
Equal masses of a 1419.53 g/mol peptide and a 4963.4 g/mol peptide give a molar ratio near 3.5 to 1, not 1 to 1, so mass-based and mole-based descriptions of this vial are not interchangeable
Produced under GMP & HACCP standards
With keratin, you dont have to worry about a harsh line between your treated hair and your new growth like what other treatments like smoothening and Japanese treatments do to hair
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Concentration: Look for formulations with GHK-Cu listed in the first half of the ingredient list, or in dedicated peptide serums where it is the hero active