glutathione + nad L-Glutathione & NAD+ Combination The Dark Spot Serum delivers all NAD vs Glutathione: Key Differences

With its potential to boost energy expenditure and improve insulin sensitivity, this peptide can support overall metabolic health

Topical Serums and Foams Pharmaceutical-grade GHK-Cu serums are applied directly to the scalp, usually once or twice daily

L. I. Fedoreyeva, I. I. Kireev, V. Kh. Khavinson, and B. F. Vanyushin, Penetration of short fluorescence-labeled peptides into the nucleus in HeLa cells and in vitro specific interaction of the peptides with deoxyribooligonucleotides and DNA, Pleiades Publishing Ltd, Nov. 2011. doi: 10.1134/s0006297911110022

Graves, V

Type 1 interferons (IFNs) orchestrate antiviral defenses

I wouldn't hesitate to use again, in fact likely going back for another treatment on another facial issue they discussed or if I need a top up after healing