Th1 cells fight intracellular pathogens and drive cellular immunity
Temporary Nausea and Headache: Some users report feeling nauseous or experiencing headaches shortly after the injection, though these symptoms are usually brief
Eivazi S, Tanhaye Kalate Sabz F, Amiri S, Zandieh Z, Bakhtiyari M, Rashidi M, et al
Skin that looks firmer, smoother, and more youthful
Recent human topical evidence A 2023 IRB-approved 21-woman topical trial of NEEL gel (a stabilized GHK-Cu topical) reported an average 28% increase in skin collagen density at 3 months, with a top quartile reporting 51%
The extensive safety data comes from trials focused on weight management using systemic administration routes