Over time, it may potentially reduce the pounds
The short answerit can vary by individual, but many people begin feeling noticeable effects within hours or days
In published preclinical research, GHK-Cu has been examined across in vitro fibroblast and keratinocyte cultures (PMID 19319546, PMID 23019153), murine wound-healing and tissue-remodelling models (PMID 38879894, PMID 39902373), and broader gene-expression-profiling work in cell culture (PMID 28212278, PMID 29986520)
While concentrated copper solutions can be blue (and some CP serums might have a faint blue tint), they are used in very small, safe concentrations in skincare and won't stain your skin
The improvement is cumulative and continues as long as the protocol is maintained