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Glutathione is a tripeptide composed of glutamic acid, cysteine and glycine, and the sulfhydryl group on cysteine is its active group (so glutathione is often abbreviated as G-SH)
At the same time, both ingredients are targeting melanin through different pathways, which means the brightening effect is compounded
However, the absence of documented interactions does not automatically mean the combination is appropriate for everyone
Investigators studying vascular biology have also employed in-vitro angiogenesis assay models to characterize endothelial tube formation and sprouting in the presence of repair-oriented peptides
McKinney (Indiana University) for coordinator assistance