The lower pH protonates key amino acid residues especially histidine and glutamate which changes the peptide's electrical charge and stops molecules from sticking together
Konno, M., Asai, A., Kawamoto, K., Nishida, N., Satoh, T., Doki, Y
Cycle, Dosage and Duration of use
Skincare ingredients that complement Glutathione In order to support healthy, radiant skin, a number of other ingredients and products can be used in addition to glutathione in skincare
Retinol and acids : Ingredients like glycolic acid, salicylic acid, and retinoids may reduce the efficacy of copper peptides while increasing skin sensitivity
Dai W, et al