GHK-Cu copper peptides for skin: what the evidence actually shows

What did @tusister_jurissa actually say?

Honestly? Not much that's medically specific. The transcript is almost entirely incoherent, cycling through vague phrases like "working together to find our best results" and "make special decision" without ever naming a mechanism, a concentration, or a specific benefit. The video is tagged with #copperpeptides and #multipeptideserum, and the caption references The Ordinary's blue serum, but the spoken content doesn't land any concrete skincare claims. This makes traditional fact-checking nearly impossible, because there's nothing specific enough to pin down. What we can do is fact-check the implied claims baked into those hashtags.

The product in question appears to be The Ordinary Multi-Peptide + Copper Peptides 1% Serum, which contains GHK-Cu (copper tripeptide-1) alongside other signal peptides. That's worth discussing seriously, because the ingredient has a real research record, even if this creator didn't explain any of it.

Does the science back this up?

GHK-Cu has a legitimate, if incomplete, body of evidence behind it. This is not a snake oil ingredient. The short answer is: topical copper peptides show real promise for skin remodeling, but the clinical evidence in humans is still thinner than the marketing suggests.

GHK-Cu (glycyl-L-histidyl-L-lysine copper complex) was first isolated in human plasma by Loren Pickart in the 1970s. Subsequent research showed it stimulates collagen and glycosaminoglycan synthesis in fibroblasts (Pickart & Margolina, 2018, Biomedicines). A randomized controlled trial by Leyden et al. (2009, Journal of Cosmetic Dermatology) found that a 1% GHK-Cu formulation improved skin laxity and fine lines compared to vehicle control after 12 weeks. That's meaningful data. However, most copper peptide studies are industry-funded, small, and short-duration. Penetration depth of topical GHK-Cu through the stratum corneum also remains contested, and absorption data in humans is limited.

The other peptides in The Ordinary's formula, including Matrixyl (palmitoyl pentapeptide-4) and acetyl hexapeptide-3, have similarly mixed evidence. Signal peptides are plausible in theory, but effect sizes in independent trials are modest.

What did they get wrong (or right)?

Because the creator said almost nothing substantive, there's no specific misinformation to correct. That's actually its own problem. A video with 44,200 views implying anti-aging benefits from a peptide serum, with zero explanation of how it works, who it's appropriate for, or what realistic expectations look like, is low-value content dressed up with credible hashtags.

What the creator got right, by accident: GHK-Cu is one of the more research-supported topical peptides available in an over-the-counter formulation. The Ordinary's 1% concentration is consistent with concentrations used in published trials. Framing it as an anti-aging ingredient is not wrong, it's just wildly undersupported by anything said in this video.

What's missing: no discussion of pH compatibility (copper peptides can be destabilized by vitamin C at low pH), no mention of the fact that results take 8 to 12 weeks minimum, and no acknowledgment that individual response varies considerably based on skin barrier function and baseline collagen density.

What should you actually know?

If you're considering a copper peptide serum, here's what the evidence actually supports, stripped of the noise.

• GHK-Cu stimulates fibroblast activity in vitro and has shown statistically significant improvements in skin firmness and wrinkle depth in at least two peer-reviewed RCTs (Leyden et al., 2009; Abdulghani et al., 1998, Archives of Dermatological Research).
• Topical absorption is the limiting factor. Not all of a peptide applied to skin reaches the dermis where collagen synthesis happens. Delivery vehicle matters significantly.
• Copper peptides should not be layered with high-dose ascorbic acid (vitamin C) in the same routine step. The oxidative interaction can degrade both ingredients.
• "Anti-aging" in this context means modest improvements in texture and firmness over months, not reversal of photoaging or structural skin changes. Anyone promising dramatic results from a topical peptide serum is overstating the data.
• The Ordinary's formulation is a reasonable, affordable entry point. It is not equivalent to prescription retinoids or professionally administered treatments for wrinkle reduction. Those comparisons would be inaccurate.

Bottom line: the ingredient is real, the product is legitimate, and the video tells you essentially nothing useful about either.