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SCFAs, short chain fatty acids
Conversely, at higher concentrations (5-10 M) or in melanocytes with elevated baseline melanogenic activity, GHK-Cu can suppress tyrosinase activity and reduce melanin production by 20-40%, offering potential benefits in melasma or post-inflammatory hyperpigmentation
As for significant weight management results, those tend to show up after a few months of consistent effort
The evidence is not strong enough to support every marketing claim, but it is also inaccurate to say that ordinary L-glutathione never works
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