The summary below pulls the headline numbers from each pivotal study
The more meaningful caveat is that they are unapproved compounded products, so formulation and quality vary by pharmacy which makes your choice of compounder a clinical decision, not a purchasing one
Intriguingly, despite robust inflammatory activation, they reported no changes in the expression of canonical tight junction proteins (e.g., Cldn5), adherens junction molecules (e.g., Cdh1), or components of the basal lamina across both early and late phases of the disease model
GHK-Cu copper peptides help support collagen elastin production to reduces fine lines and wrinkles, smooth rough skin, improve firmness elasticity, and promote a more radiant-looking skin with daily use.
In others, especially where traditional medicine is widely practiced, there may be greater trust in natural or plant-based antioxidants