Definitions
GHK-Cu is topical; microneedling is procedural
GHK-Cu means glycyl-L-histidyl-L-lysine copper, a copper-binding tripeptide discussed in skin and tissue-remodeling research. Microneedling uses needles or a device to make controlled microchannels in skin. They may appear together in beauty and hair-growth searches, but they raise different safety, evidence, quality, and supervision questions.
- A compounded or dispensed GHK-Cu topical should not be described as an FDA-approved finished drug for wrinkles, scars, wounds, burns, or hair loss.
- Microneedling is not just a serum step; device depth, sterility, infection prevention, bleeding risk, skin type, and aftercare can change the risk profile.
- People with sudden hair loss, painful scalp symptoms, rash, open wounds, active acne flares, keloid history, or medication-related bleeding questions should not self-treat from cosmetic marketing.