Using both together (or in the same formulation) gives you complementary action without conflict
[DOI] [PMC free article] [PubMed] [Google Scholar] 195.Reisman S.A., Gahir S.S., Lee C.I., Proksch J.W., Sakamoto M., Ward K.W
Prousky, J
The Appearance of Fine Lines and Wrinkles Because GHK-Cu copper peptides serum may support the appearance of firmer, smoother-looking skin over time, many people who use it consistently report gradual improvements in the appearance of fine lines and wrinkles
However, this relationship is still under research
Conversely, normal oxidative-stress biomarkers do not rule out atherosclerosis, high blood pressure, inherited cardiovascular risk, structural heart disease, or other health concerns