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A Reddit user said they stopped injecting a peptide called GHK-Cu a couple months ago and now have a small lump at one of their old injection sites. They asked if anyone knew how to make it go away, and mentioned that aggressive massage helps a bit but the lump is still noticeable. That’s the whole report — a single person describing a leftover bump where they used to inject. GHK‑Cu is a short peptide (a tiny protein fragment) that’s used in some skin and hair products and sometimes injected by people experimenting with anti‑aging or cosmetic treatments. In plain terms: it’s a lab-made molecule that’s similar to something the body can use in wound healing and collagen production. It’s not one of the high-profile drugs like Ozempic. Many uses of GHK‑Cu are off‑label or experimental, and dosing, purity, and technique can vary a lot when people buy it online. What this post actually shows is anecdote, not a study. It’s a single person reporting a persistent lump after stopping injections. That kind of lump could be many things — leftover scar tissue, a small local allergic reaction, a sterile injection bump (a granuloma), or a retained deposit if an oil or impurity was injected. The message that massage helped a bit is interesting but doesn’t prove cause or guarantee a fix. There’s no clinical data in the post about how common this is, how long it lasts on average, or whether it needs treatment. Why people should care: anyone who injects peptides or other substances into their skin should know that local lumps and skin changes are a known possible outcome. It’s especially relevant for folks self‑administering cosmetic peptides without medical supervision or without knowing how the product was made. Small, painless lumps can be minor and may fade over time, but persistent or growing lumps deserve attention because they can indicate infection or other complications. Caveats and risks: this is just one Reddit report, not medical advice. If a lump is red, warm, painful, leaking, growing, or not improving over a few weeks, see a healthcare professional. Avoid trying to lance or squeeze it yourself — that can cause infection or scarring. Be cautious about sourcing peptides online; impurities, incorrect concentration, or wrong formulation (like something meant for external use only) can increase risk. If you’re thinking of injections in the future, get trained on sterile technique and consider discussing choices with a clinician. Bottom line: a persistent injection‑site lump after stopping GHK‑Cu shows that local bumps can happen, massage may help a little, but medical evaluation is wise if it’s persistent, painful, or changing.
Source: r/Peptides