GHK-Cu peptide for skin, hair and recovery: what the evidence says

What did @sally.swalling actually say?

The video is primarily a procedural how-to: remove the cap, wipe with alcohol, draw three milliliters of bacteriostatic water, inject it down the side of the vial, and let it dissolve for about five minutes without shaking. The caption frames this routine as a path to "glass skin, hair and nail health, inflammation and recovery." The technique gets more screen time than the science, which is typical for peptide content on TikTok. She doesn't specify a dose, injection route, or frequency in the transcript, so the medical claims live mostly in the caption rather than the spoken word. That distinction matters when we evaluate what she's actually putting into the world.

Does the science back this up?

Partially, and with meaningful caveats. GHK-Cu (copper tripeptide-1) has a legitimate research history, but most of it is in vitro or animal work, not human randomized controlled trials. The skin angle has the strongest support. Leyden et al. (2008, Journal of Cosmetic Dermatology) found topical GHK-Cu improved skin laxity and density in a small human trial. Pickart and Margolina (2018, Biomolecules) reviewed GHK-Cu's role in collagen and elastin synthesis, wound healing, and anti-inflammatory signaling. The hair angle has some backing too: Uno and Kurata (1993) showed copper peptides promoted hair follicle size in animal models. The "inflammation and recovery" claims are more speculative in humans. None of this work validates injected reconstituted peptides purchased from a supplement supplier, which is a completely different regulatory and pharmacokinetic situation than the studied forms.

What did they get wrong (or right)?

The reconstitution technique is mostly correct. Using bacteriostatic water is the right call over sterile water for multi-use vials, alcohol swabbing the septum before puncturing is standard aseptic practice, and letting it dissolve without aggressive shaking preserves peptide integrity. Credit where it's due. What's missing is everything that actually matters clinically. There's no mention of sterility verification, storage temperature (GHK-Cu should be refrigerated after reconstitution and used within a defined window), or the fact that this product comes from an unregulated supplement supplier, not a compounding pharmacy. The caption's "glass skin" framing is also doing a lot of work that the research doesn't support at injectable doses from an unverified source. Overstating cosmetic outcomes while skipping safety context is a pattern in this content category, and it's a problem.

What should you actually know?

GHK-Cu is one of the better-studied peptides in this space, but "better-studied" is relative. Most human evidence supports topical application, not subcutaneous injection of self-reconstituted powder from a commercial supplier. The regulatory status matters here: in Australia, where Alpha Peptides Australia operates, peptides sold for "research use" exist in a gray zone that bypasses the Therapeutic Goods Administration's approval process for human use. That means no verified purity testing, no standardized dosing, and no liability if something goes wrong. Reconstituting peptides at home also carries real infection risk if technique is imperfect, even with alcohol wipes. The five-minute dissolution method shown is reasonable, but peptide stability post-reconstitution depends on storage conditions she doesn't address. If you're interested in GHK-Cu for skin or recovery outcomes, the topical evidence is more robust and the risk profile is far more manageable than anything involving a needle and a vial from a social media affiliate link.