It's systemic, but it also is supposed to be local as well
Comparison of efficacy and safety of daily oral L-arginine and PDE5Is alone or combination in treating erectile dysfunction: A systematic review and meta-analysis of randomised controlled trials
Peptide Serum Support Smoother, Firmer Skin with a Medical-Grade Peptide Serum As skincare continues to evolve, many individuals are turning to targeted treatments that support the skins natural renewal process
Rosario LA
Kawaguchi Y, Kovacs JJ, McLaurin A, Vance JM, Ito A, Yao TP
The copper complex has stability characteristics that depend on the formulation environment, and a formulation outside the appropriate pH range can affect the integrity of the copper complex over the formulations shelf life