Immune cells are highly sensitive to oxidative stress during activation, and the intracellular glutathione pool can influence inflammatory signaling pathways and the balance between pro-oxidant and antioxidant responses
We recommend avoiding the use of The Ordinary Multi-Peptide + Copper Peptides 1% Serum with other direct acids, retinoids, or strong antioxidants like vitamin C
The practical consequences are two: the ascorbic acid degrades rapidly, losing its antioxidant and collagen-synthesis signaling value before it can act, and the superoxide generated in the process is a reactive oxygen species that may cause irritation or oxidize other formula components
Daver N, Garcia-Manero G, Basu S, Cortes J, Ravandi F, Jabbour E, Assi R, Brandt M, Pierce S, Gordon T, Pemmaraju N, Andreeff M , Ning J, Kornblau S, Kadia T, Flores W, Matthews J, Dinardo C, Konopleva M, Allison J, Sharma P, Kantarjian H