The Concentration Proof: If a copper peptide serum is clear, it likely uses a diluted "complex" rather than pure crystalline powder
doi: 10.1097/MCO.0b013e32830b5d37
The glutathione article covers: what oxidative stress actually means at the cellular level, why the liver prioritises glutathione above every other antioxidant, how glutathione depletion drives the progression of non-alcoholic fatty liver disease, and what the evidence actually says about glutathione and biological ageing
Potent inhibition of human steroid 5alpha-reductase (EC 1.3.1.30) by 3-androstene-3-carboxylic acids.Bioorg.Med.Chem.1989,17, 372-376 81
The pairing reflects how frequently these two compounds appear together in research literature
Fortunately, it can be found in a number of foods