Can GHK-Cu cause acne?

This site's GHK-Cu citations do not measure acne. They report fibroblast collagen synthesis in culture, wound-chamber work in rats, and a 2015 review of topical cosmetic studies describing firmer skin. Injected use is far less studied. Acne is not a counted trial outcome here, and this FAQ does not invent one.

Educational use only. This database summarizes published research and is not medical advice. Where a dose appears it is a record of what a trial or clinic ran, or what people describe doing, with its source attached. Nothing here is a recommendation for personal use.

Part of more absences and national fields. Further harvested questions after the first names-and-absences set: more side effects the citations did not count, compounding formulas this catalogue does not hold, national legal-status fields for compounds that only have those four countries, trial windows rather than an onset clock, and named prescription combinations with no interaction table.