Copper peptides are gaining popularity on social media as a skincare solution. Known as GHK-Copper or GHK-Cu, this compound is touted for its potential to improve skin firmness, reduce wrinkles, enhance hair growth, and provide other anti-aging benefits. This fascination reflects the broader trend of peptides in the wellness and longevity sectors. Although GHK-Cu is not an approved drug, it is backed by significant scientific research.

Topical copper peptide serums and creams have existed on the market for decades, studied through human trials. Recent changes in application methods are causing concern. Users are increasingly opting for subcutaneous injections, sometimes in combination with other peptides for tissue repair. There is no evidence from human studies to confirm the safety and effectiveness of this practice. Risks are heightened by the fact that many injectables are purchased from unregulated online sources.

“I think GHK can have a major role in helping enhance longevity,” says Dr. Warren Ladiges, University of Washington School of Medicine. “But injecting yourself without really knowing what it’s going to do? I wouldn’t do that to myself,” he adds.

Copper peptides have a history dating back over fifty years. In the early 1970s, chemist Loren Pickart isolated GHK after observing liver cells’ revival in younger adults. This discovery revealed that levels of GHK decline with age. Subsequent studies demonstrate GHK-Cu’s ability to stimulate collagen production, aid skin remodeling, promote blood vessel growth, and reduce inflammation. Controlled human trials primarily focus on skin health, aesthetics, wound healing, and hair growth. Generally, cosmetic industry-funded studies show improved skin thickness and elasticity, reduced wrinkles, and increased hair growth.

While current research mainly centers on skin health, pre-clinical studies suggest broader potential. Animal research indicates GHK-Cu aids wound healing and organ repair, including lung fibrosis. Ladiges’ experiments indicate it influences aging pathways and can mitigate Alzheimer’s symptoms in mouse models. However, efforts to secure human trials remain unsuccessful due to patenting challenges and funding requirements.

Uncontrolled use of GHK-Cu on social media has led to inquiries from peptide-curious patients. There is interest in whether injections offer better results than topical applications. According to Dr. David Goldberg, director of cosmetic dermatology at Schweiger Dermatology Group, GHK-Cu supports collagen, akin to topicals like Vitamin C and antioxidants. Nonetheless, dermatologists recommend caution with injections. The molecule’s difficulty in skin penetration is acknowledged, but without human studies, positive impacts remain speculative.

Ladiges asserts that GHK-Cu is generally safe, based on animal studies. Injection risks involve potential copper overload or immune reactions. Concerns arise from sourcing injectables from unregulated sellers, lacking quality and dosage assurances. Dr. Marisa Garshick from MDCS Dermatology notes the uncertainty in the composition of purchased peptides. “The stakes are much higher when you’re injecting something,” she remarks.

Peptides, as injectables, exist in regulatory uncertainty. U.S. compounding pharmacies cannot offer GHK-Cu injections, though regulatory changes may occur. A panel advising the FDA recently suggested reclassification of several peptides. In February, this group will evaluate evidence for GHK-Cu injections among others.

Clinical Observations

Despite risks, GHK-Cu remains accessible in the grey market. Erik Marks, a doctor of nursing practice at Vitality Medical PNW in Seattle, observes concerns about self-administered injectables. Patients report issues from irritation and infections to liver problems. Marks advises monitoring lab work and offers GHK-Cu as serum, cream, and occasionally as an injection mixed with peptides for repair and inflammation. He procures products from a licensed U.S. pharmacy.

According to Marks, topicals are effective for skin and hair growth, with minimal impact from injections. “I think the jury is still out on the effects of it,” he says. “People need to understand these peptides are not silver bullets to fix health.”