Over time, copper peptides improve firmness, increase skin thickness, and promote even tone and smooth texture
The first sustained visible change is usually around session four, at the 6-to-8-week mark, when surface texture begins to refine and the morning-mirror impression of the face stops being identical to the pre-treatment baseline
doi: 10.1093/braincomms/fcab229 73 GritschS.LuJ.ThilemannS.WrtgeS.MbiusW.BruttgerJ.et al
Tissue Eng Part A
Intramuscular injection, by contrast, deposits peptide 1540mm deep (depending on needle length and injection site), requiring the compound to enter venous return, circulate systemically, and then diffuse back out of dermal capillaries to reach fibroblasts
Furthermore, societal expectations and gender norms may lead women to downplay their symptoms or seek help later than men, further complicating timely intervention