The three components are paired in a single product because their mechanisms are commonly framed as complementary in research and clinical-anecdote contexts: GHK-Cu modulates collagen and elastin synthesis, antioxidant gene expression, and dermal extracellular matrix remodeling
That said, you can tailor timing to your goals: For UV protection and antioxidant defense, the morning is the best time to take collagen, as it helps counteract cortisol-induced collagen loss and works synergistically with Vitamin C
Users report smoother texture, improved hydration, and reduction in fine lines
Chou W-YS, Gaysynsky A, Trivedi N, Vanderpool RC
And for more rapid improvement intramuscular therapy is used, and it must be considered in patients with severe deficiency or severe neurologic symptoms