Medication, Prescription Drug, and Topical Product Interactions Topical GHK-Cu may interact practically with other skin products by increasing irritation risk, especially in people using retinoids, acids, exfoliants, medicated creams, or post-procedure regimens
Behind the scenes, these factors create unstable molecules called free radicals that attack your skin cells
Intravenous glutathione can cause redness, itching, and irritation at the injection site
doi:10.1016/j.jid.2024.09.012
I started with 1 mg injections three times a week
Li et al., 2017) all act on the dopaminergic system and could increase dopamine concentrations or activate immune dopamine receptors similarly to addictive substances