@clickityclack69's glow peptide claims, fact-checked

What did @clickityclack69 actually say?

Honestly? Not much about peptides. The transcript captured from this video is "If you put one fit on that boat, are you listening to me? Don't touch the boat." That has nothing to do with GHK-Cu, stretch marks, or peptide therapy. The caption claims a "glow peptide" is making stretch marks disappear, and the hashtags reference GHK-Cu, BPC-157, and TB-500, but the spoken content on record does not support any of that. We are working with a caption-driven claim here, not a spoken one.

This matters because it limits what we can directly attribute to the creator. What we can evaluate is the implicit claim carried by the caption and hashtags: that GHK-Cu is responsible for fading stretch marks. That claim is worth taking seriously, because it is circulating widely at 136,500 views.

Does the science back this up?

There is real research on GHK-Cu, and some of it is genuinely interesting. But "disappear" is doing a lot of heavy lifting in this caption, and the evidence does not support that word choice.

GHK-Cu (glycyl-L-histidyl-L-lysine copper complex) has been studied for its effects on skin remodeling since Pickart first described it in the 1970s. More recent work, including Pickart and Margolina (2018, Symmetry) reviewed its role in stimulating collagen and elastin synthesis, activating wound healing pathways, and modulating matrix metalloproteinases. Those are real mechanisms relevant to skin repair.

Stretch marks (striae distensae) involve dermal tearing and collagen disruption. In theory, a compound that promotes collagen synthesis could help. A small 2020 study by Saab et al. in the Journal of Cosmetic Dermatology found topical GHK-Cu improved skin elasticity and reduced fine lines, but stretch marks were not the primary endpoint. No peer-reviewed trial has specifically demonstrated that GHK-Cu makes stretch marks "disappear." Improve in appearance? Possibly. Vanish? That is not what the data says.

What did they get wrong (or right)?

The caption oversells the outcome. "Disappear" implies complete resolution, and no topical or injectable peptide therapy has demonstrated that for established striae in a controlled trial. That framing is misleading, full stop.

What the creator may have gotten directionally right is the mechanism. GHK-Cu does have credible science behind skin repair pathways. It is not snake oil. Pickart's foundational work and subsequent in vitro studies show it upregulates collagen I, collagen III, and elastin gene expression. Gorouhi and Maibach (2009, International Journal of Cosmetic Science) reviewed peptide use in skin care and found some evidence for copper peptides in wound healing contexts.

The TB-500 and BPC-157 hashtags are a different matter. Both are research peptides with no FDA approval for human cosmetic use. BPC-157 has shown wound healing effects in animal models (Seiwerth et al., 2018, Current Pharmaceutical Design), but human data is limited and these are not approved therapies. Tagging them in a skin-glow context without any caveats is irresponsible.

What should you actually know?

GHK-Cu is one of the better-studied cosmetic peptides, and the interest in it for skin repair is not unfounded. But the gap between "has biological plausibility" and "makes stretch marks disappear" is significant, and that gap is where misinformation lives on TikTok.

Stretch marks are notoriously difficult to treat with anything. Retinoids, laser therapy, and microneedling have the strongest evidence bases for improving their appearance, and even those rarely produce complete resolution. A peptide serum or compounded injectable is unlikely to outperform those interventions based on current evidence.

If you are considering peptide therapy for skin concerns, that conversation belongs with a licensed provider who can review your history, not a TikTok caption. GHK-Cu products vary enormously in formulation, delivery method, and actual copper peptide concentration. What someone else experienced is not a clinical protocol.

• GHK-Cu has real mechanisms tied to collagen synthesis, but "disappear" overstates what studies have shown.
• BPC-157 and TB-500 are not approved for cosmetic use and lack human clinical trial data for skin applications.
• Stretch marks have no proven complete-resolution treatment in the peer-reviewed literature as of 2024.
• Topical delivery of peptides faces significant bioavailability challenges that the caption does not acknowledge.