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Description
When a brand claims "1% GHK-Cu," they are typically referring to the volume of that pre-made solution used in their formula, meaning the actual active peptide concentration is only 0.01%
Standards were diluted as follows: 20 L of 10 mM ferrous chloride standard was added to one tube containing 180 L of 1 assay buffer and labeled with 1000 M FeCl 2
doi: 10.1111/j.1600-079X.2008.00555.x 73 SatiL
The concentrations corresponding to the linear relationship were (50250 g/mL, 1575 g/mL, and 210 g/mL) for l-glutathione, n-acetyl l-cysteine, and Vitamin-C, as mentioned in Tables 4, 5 and 6 respectively
