Injectable Peptides for Anti-Aging? A Dermatologist Explains GHK-Cu
A dermatologist reviews what Dr Dray says the evidence does and does not show for GHK-Cu in skin, hair and brain claims, and why she cautions against injecting it.
With Dr. Dray (board-certified dermatologist)
Key moments
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- 0:00Why injectable peptides are trendingDray introduces herself as a dermatologist and says influencers are promoting injectable peptides for wrinkles, hair and longevity. She says popularity is not proof of evidence or safety.
- 0:49What GHK-Cu isShe explains that GHK is a glycine, histidine and lysine peptide that binds copper and falls with age, from about 200 ng/mL in the 20s to about 80 ng/mL in the 60s.
- 1:40Skin research and its limitsDray describes laboratory and preclinical findings on growth factors and collagen, then stresses that the work is mostly in cells and human trials are very small.
- 3:07Collagen and anti-aging claimsShe says there is some biological plausibility through copper's role in collagen enzymes, but no high-quality human studies back anti-aging claims.
- 4:14Hair growth evidenceDray covers proposed mechanisms and one small retrospective study combining GHK-Cu with minoxidil and dutasteride, which she says cannot show GHK-Cu grows hair.
- 5:40Brain and longevity claimsShe says support for brain and longevity claims comes from preclinical studies, and that no clinical trials show such effects in people.
- 6:24Problems with injecting peptidesShe lists her concerns: no FDA approval for human use, no standard dosing, purity issues, no long-term safety data, and the VEGF point.
- 8:51Topical versus injectableDray says topical GHK-Cu is generally low risk but poorly penetrates skin, so effects may be modest. She says injection bypasses the skin barrier and carries more concerns.
- 9:55Bottom lineShe calls GHK-Cu a biologically active peptide but says current evidence is mostly preclinical, and she does not support the injection trend.
What the video says
Dr. Dray, a board-certified dermatologist, responds to social media posts promoting injectable peptides for wrinkles, hair growth and longevity, with GHK-Cu as her main example. She says trending does not mean the evidence is robust or the product safe, and she sets out to cover what GHK-Cu is, what the data show and what she says is not being disclosed to buyers.
She describes GHK as a three amino acid peptide found naturally in human plasma, with levels she gives as about 200 ng/mL in a person's 20s and about 80 ng/mL by the 60s. Bound to copper, she says, it has been studied for decades in wound healing, tissue repair and inflammation. For skin, she says the excitement rests mostly on cell and preclinical work suggesting higher growth factors and collagen and elastin production, plus a few small human studies of topical use. Her view is that the human evidence is too limited to support anti-aging conclusions.
She goes through the hair and brain claims in the same way. On hair, she mentions proposed mechanisms and one very small retrospective study that combined GHK-Cu with minoxidil and dutasteride, which she says lacked a control group and could not isolate GHK-Cu's effect. On brain health and longevity, she says the support is preclinical and there are no clinical trials.
The second half is about injection. Dray says many injectable products come from compounding pharmacies or research chemical sites, are not FDA-approved for human use, have no standardized dosing, and carry purity and contamination concerns. She also raises a concern that the VEGF increase seen with the peptide is a feature of many cancers, and says there is no long-term safety data. She contrasts this with topical GHK-Cu, which she calls generally low risk but with modest effects and limited skin penetration.
On each compound
GHK-Cu0:49
Dray says GHK-Cu is a naturally occurring copper-binding peptide studied for wound healing and tissue repair. She says its skin, hair, brain and longevity claims rest mainly on cell and preclinical work, and that she advises against injecting it.
See how your DNA reads GHK-Cu“You're not a mouse.”
What this video doesn’t settle
- Dray's comments on hair rest on one small retrospective study she describes, and the video does not cite or detail any trial data.
- The video does not establish what dose or route, if any, would be appropriate for GHK-Cu in humans.
- Her VEGF and cancer point is presented as a general concern, and she does not point to evidence of it occurring with GHK-Cu.
Questions this video answers
What does Dr Dray say about GHK-Cu for anti-aging?
Dray says there is some biological plausibility, since copper is needed by collagen and elastin enzymes. She says high-quality human studies are lacking, and that even topical data are very limited.
What does Dr Dray say about GHK-Cu and hair growth?
She describes proposed mechanisms and a very small retrospective study combining it with minoxidil and dutasteride. She says it had no control group and did not isolate GHK-Cu, so it does not show the peptide grows hair.
Why does Dr Dray caution against injecting GHK-Cu?
She says injectable products are marketed through compounding pharmacies or research chemical sites without FDA approval for human use. She cites no standardized dosing, purity and contamination concerns, and no long-term safety data.
What does Dr Dray say about topical GHK-Cu?
She says topical GHK-Cu appears in many skincare products and is generally considered very low risk. She adds that penetration is very limited and effects are usually modest.
Video by Dr Dray on YouTube, embedded as published. The summary is written by PeptidesDNA from the video; every claim in it is the speaker’s. Not affiliated with or endorsed by the creator. Not medical advice.
