Aim for seven to nine hours per night to support melatonin production and control cortisol levels, which can otherwise contribute to inflammation and break down collagen
Heffernan M., Jiang W.J., Thorburn A.W., Ng F.M
Quick Reference INCI Names: Copper Tripeptide-1 (GHK-Cu), Copper Tripeptide-3 (AHK-Cu) Common Names: Copper peptides, blue copper peptide, GHK-Cu, AHK-Cu Category: Peptide, signal peptide Source: GHK-Cu occurs naturally in human plasma
WU, Guoyao et al
Of course, the publishers could be using items such as DOIs to track retracted papers and query their citations
Additionally, Glutathione also combats oxidative stress and environmental damage that contribute to dullness and discoloration, giving the skin a natural glow from within