What did @evanmxka actually say?
The creator is self-administering GHK-Cu and BPC-157 via subcutaneous injection. The stated goals are reducing sunspots and fine lines with GHK-Cu, and accelerating recovery from a patellar tendon or calf injury with BPC-157. They also weigh in on product quality, claiming that pre-mixed "glow stacks" are under-dosed and that injecting the same syringe into both vials does not cause contamination.
To their credit, they close with a clear disclaimer: "I'm not a certified source...don't trust TikTokers." That kind of self-awareness is rare and worth acknowledging. But saying "do your own research" while simultaneously giving reconstitution ratios and injection site guidance is a contradiction that matters. The video functions as instructional content whether they intend it that way or not.
Does the science back this up?
On GHK-Cu for skin, there is real but limited evidence. On BPC-157 for tendon and muscle injury, the animal data is genuinely interesting, but human clinical trials are essentially absent. That gap is bigger than most peptide content creators acknowledge.
GHK-Cu (copper tripeptide-1) has shown activity in lab and some small human studies as a topical agent. Pickart et al. (2015, Journal of Aging Research) documented its role in collagen synthesis and skin remodeling. However, most of that work involves topical application, not subcutaneous injection for cosmetic skin outcomes. The leap from "topical GHK-Cu shows skin benefit" to "injecting it removes sunspots" is not supported by published clinical evidence.
BPC-157 has a more interesting research base. Sikiric et al. (2018, Current Pharmaceutical Design) reviewed its effects on tendon, ligament, and muscle healing in rodent models, with consistent positive results. The problem is that rodent pharmacokinetics do not automatically translate to humans, and no randomized controlled trials in humans have been published as of this writing. The creator is extrapolating from animal data, which is not the same as proven efficacy.
What did they get wrong (or right)?
They got the bacteriostatic water explanation largely right. It does serve as a preservative and diluent. The detail about benzyl alcohol being the active preservative agent is accurate.
They got the "glow stack" critique mostly right. Pre-mixed stacks that combine GHK-Cu, TB-500, and BPC-157 at compressed volumes do tend to deliver lower individual peptide doses. If someone is specifically targeting an injury with BPC-157, a standalone vial at a consistent concentration is a more controlled approach than a blend.
Where they went wrong: the claim that reusing the same syringe across two vials is sterile practice is incorrect. Drawing from multiple vials with a single needle introduces the theoretical risk of cross-contaminating both vials, even if neither is visibly dirty. Standard sterile compounding practice uses a fresh needle for each vial entry. This is not a minor quibble when you are talking about self-injected compounds.
The zinc-offsetting-copper comment is an interesting claim but was stated without any supporting rationale. No published evidence was cited, and the mechanism described is speculative as presented.
What should you actually know?
BPC-157 and GHK-Cu are not FDA-approved drugs. They are research peptides. The FDA placed BPC-157 on its list of substances that cannot be compounded under 503A and 503B regulations in 2022, which means sourcing it through a U.S. telehealth or compounding pharmacy has become significantly more legally complicated. Anyone obtaining these compounds should understand what regulatory category they are operating in.
The injection technique shown in this video, including reconstitution ratios, syringe reuse across vials, and self-directed subcutaneous injection without medical supervision, carries real risks: infection, dosing errors, and adverse reactions. A patellar or calf tendon injury serious enough to require three physical therapists over a year also deserves imaging and a sports medicine physician's input before adding unregulated injectables to the protocol.
The creator is not wrong that this should be a "last resort." But a TikTok video is not the appropriate guide for executing that last resort safely, even one with a disclaimer at the end.