Kamierczak Z, Szostak-Paluch K, Przybyo M, Langner M, Witkiewicz W, Jdruchniewicz N et al (2020) Endocytosis in cellular uptake of drug delivery vectors, Molecular aspects in drug development
Vitamin C maintains glutathione in its active reduced form, amplifying both the antioxidant and skin brightening effects
However: Long-term data are still limited
It is generally reported that users can notice results within days of using the product or within a few weeks
If irritation doesn't improve after two weeks of reduced use, discontinue copper peptides entirely for a month
But its also a peptide where knowing the details topical versus injectable, and what it can and cant do makes all the difference, so Ill give you the honest, complete picture