Skin and pigmentation
GHK-Cu
Editorial audit: October 15, 2026 · draft; scientific, medical and translation review pending
01What is reported
GHK-Cu is described for skin, hair and systemic repair and appears in Glow/KLOW mixtures. Topical and injected practices are often discussed together.
02Proposed rationale
Copper-peptide biology and gene-expression observations are offered as a rationale. A large number of affected genes is not a clinical effect-size measure.
NOT A RECOMMENDATION.Each amount is attributed to the source identified for that entry: regulatory product labeling, human research, or community and practice sources. These source categories have different evidentiary roles. They are not medical advice, not a protocol, not a recommended or safe dose, and not evidence that it works. Do not use them to start, change or stop any treatment. Talk to a qualified healthcare professional.
03What the research shows
The audit found a heterogeneous evidence base and a critical route-transfer problem. Cosmetic or laboratory findings must retain their exact intervention and endpoints.
NOT A RECOMMENDATION.Each amount is attributed to the source identified for that entry: regulatory product labeling, human research, or community and practice sources. These source categories have different evidentiary roles. They are not medical advice, not a protocol, not a recommended or safe dose, and not evidence that it works. Do not use them to start, change or stop any treatment. Talk to a qualified healthcare professional.
04Limits and unknowns
Do not describe systemic injection as established on the strength of topical observations. The same caution applies to efficacy and safety of fixed mixtures.
05Questions to ask about the product
Distinguish GHK-Cu from AHK-Cu, copper content from peptide identity, and topical finished product from injectable material.
NOT A RECOMMENDATION.Each amount is attributed to the source identified for that entry: regulatory product labeling, human research, or community and practice sources. These source categories have different evidentiary roles. They are not medical advice, not a protocol, not a recommended or safe dose, and not evidence that it works. Do not use them to start, change or stop any treatment. Talk to a qualified healthcare professional.
06Open research question
How often do reported outcomes retain route, product identity, photographs with consistent conditions and other skin/hair treatments?
NOT A RECOMMENDATION.Each amount is attributed to the source identified for that entry: regulatory product labeling, human research, or community and practice sources. These source categories have different evidentiary roles. They are not medical advice, not a protocol, not a recommended or safe dose, and not evidence that it works. Do not use them to start, change or stop any treatment. Talk to a qualified healthcare professional.
Primary and regulatory references
- 1.