This is because they dont need to be digested, which avoids the risk of low absorption
GHK-Cu (glycyl-L-histidyl-L-lysine copper) is a naturally occurring copper peptide found in human plasma and tissues
James Cathers (Board Member) Bench 6
The Glutathione (GSH) + Vitamin C intravenous therapy is the best skin lightening or brightening treatment for darker skin ethnic groups, such as African, Hispanic, Asian Indian, and Filipino, or the Chinese obsession for skin whitening, or simply for anyone whos skin darkened from outdoor activities
Look for: a trusted brand, clear indication of glutathione concentration, favourable formulation (non-comedogenic, gentle surfactants, pH balanced), minimal harsh fragrances/alcohols, and ideally independent reviews