What did @officiallyjoeyt actually say?
The creator walked through reconstituting a 50 mg vial of GHK-Cu using 3 ml of bacteriostatic water, then injecting "six units" which they equated to one milligram. They mentioned washing hands with antibacterial soap, swabbing vial tops with alcohol, and noted that "most people like to start at two" units but they chose six as a cautious first dose. The video is framed as educational and ends with a promise to update viewers in a few weeks.
The procedure itself is fairly standard lyophilized peptide reconstitution. The math checks out: 50 mg in 3 ml gives roughly 16.7 mg/ml, and on a standard U-100 insulin syringe, six units (0.06 ml) would deliver approximately one milligram. That part is accurate. What the video does not address is whether any of this is medically supervised, what the injection route is, or why this specific dose was chosen beyond personal preference.
Does the science back this up?
GHK-Cu (copper peptide GHK) has a legitimate research profile, but almost none of it involves subcutaneous injection in humans at the doses being discussed here. The bulk of published evidence is in vitro or topical.
Loren Pickart, who has studied GHK-Cu for decades, published work showing it stimulates collagen synthesis, wound healing markers, and antioxidant gene expression in cell and animal models (Pickart et al., 2015, Journal of Aging Research). A 2018 review in Biomolecules by Pickart and Margolina confirmed these mechanisms but explicitly noted the absence of robust human clinical trials for systemic injection. The peptide does bind copper and modulate pathways like TGF-beta and VEGF in preclinical settings, which is biologically plausible. The problem is that "biologically plausible in a petri dish" and "safe and effective when you inject it into yourself based on a TikTok" are not the same statement. No phase II or III human trials exist establishing safety, efficacy, or optimal dosing for subcutaneous GHK-Cu injection.
What did they get wrong (or right)?
Credit where it is due: the reconstitution mechanics are mostly correct. Using bacteriostatic water instead of sterile water is the right call for a multi-use vial. Swabbing with alcohol before puncturing is standard aseptic technique. The math on concentration and unit conversion is accurate.
What is wrong, or at least incomplete, is framing six units as "safe" simply because it is lower than what others reportedly use. That logic only works if there is an established safety range to begin with, and there is not one for injected GHK-Cu in humans. The creator also conflates "I just kind of want to be safe" with actual dose safety data, which does not exist in any peer-reviewed source. The injection route is never stated clearly, which matters enormously for peptide pharmacokinetics. Subcutaneous versus intramuscular versus intravenous have meaningfully different absorption profiles and risk considerations. Skipping that detail in a how-to video is a real gap.
What should you actually know?
GHK-Cu is not FDA-approved for injection. It exists in a regulatory gray zone, compounded by some telehealth providers under physician supervision, but that supervision is the part this video entirely skips. Self-injection of any peptide without a confirmed diagnosis, lab work, and a prescribing clinician is not a best practice, regardless of how clean your technique is.
The copper component also matters. GHK-Cu delivers bioavailable copper, and copper toxicity, while uncommon, is real. Chronic elevated copper intake is associated with liver damage and neurological effects (Stern et al., 2007, American Journal of Clinical Nutrition). No one in the comments of a TikTok video is monitoring your serum copper levels. If you are interested in GHK-Cu for legitimate therapeutic goals, the evidence base for topical application is actually stronger than for injection, and it carries a significantly lower risk profile. Topical GHK-Cu has been studied for skin repair and wound healing with reasonable preliminary results (Leyden et al., 2018, Journal of Cosmetic Dermatology).
The bottom line: this video teaches you how to reconstitute a peptide. It does not teach you whether you should, whether the dose is appropriate for your body, or what to do if something goes wrong.