Canada \u00b7 GHK-Cu
GHK-Cu in Canada: injectable vs skincare copper peptides.
Copper peptide (GHK-Cu) is searched in Canada both as a skincare ingredient and as an injectable. The rules differ. This page is non-commercial and gives no product picks.
Health Canada's position
Injectable GHK-Cu has no authorization or DIN in the Drug Product Database. Health Canada named GHK-Cu in its April 2026 advisory on unauthorized injectable peptides and in its August 2025 seizure advisory. Copper peptides in creams and serums are sold as cosmetic ingredients, a separate regulatory category that does not allow drug claims. More: are peptides legal in Canada?
What the evidence says
GHK-Cu is a naturally occurring copper-binding tripeptide. Topical studies suggest modest improvements in skin appearance, mostly in small or industry-linked trials. There are no controlled human trials of injected GHK-Cu. Last reviewed: October 2026.
What GHK-Cu users report
- 58 published anonymous GHK-Cu confessions; 7 mention at least one side effect.
- 1 mention Canada, a province or a Canadian city in the text.
Most-mentioned side effects (share of GHK-Cu confessions):
- Hair shedding: 3.4% (2)
- Injection-site reaction: 3.4% (2)
- Heart rate or palpitations: 1.7% (1)
- Insomnia or poor sleep: 1.7% (1)
- Vomiting: 1.7% (1)
Counts are phrase mentions in anonymous accounts, not diagnoses or clinical rates. Full breakdown and methodology: GHK-Cu hub.
GHK-Cu forms and evidence
| Form | Status in Canada | Evidence |
|---|---|---|
| Copper peptide creams and serums | Cosmetics; legal | Small studies: modest skin-quality improvements |
| Hair products | Cosmetics | Very limited |
| Injections | Unauthorized; Health Canada has warned against injecting peptides bought online | Lab and animal wound-healing data |
GHK is a natural tripeptide found in blood that binds copper; it was identified in the 1970s. More: peptides for skin in Canada, copper peptides.
Last reviewed October 15, 2026against Health Canada's Drug Product Database and Health Canada sources.
How to read a copper peptide label in Canada
- Cosmetics list ingredients by INCI name; copper peptide often appears as “copper tripeptide-1”.
- Cosmetic claims are about appearance (“smoother-looking skin”); claims to treat a condition would make it a drug.
- Patch-test new products; stop if you get redness, burning or itching.
- Copper peptides may irritate when layered with strong acids or retinoids; a pharmacist or dermatologist can advise.
- Report a reaction to a cosmetic to Health Canada.
Related
Frequently asked questions
- What is copper tripeptide-1?
- The cosmetic ingredient name for copper peptide (GHK-Cu) in skin-care products.
- Is GHK-Cu natural?
- Yes. GHK is a tripeptide found in human blood that binds copper; levels fall with age.
- Is GHK-Cu legal in Canada?
- Topical copper peptide cosmetics can be sold. Injectable GHK-Cu is unauthorized, and Health Canada has warned against it.
- Does topical copper peptide work?
- Small studies suggest modest skin benefits; evidence is limited.
- Does this page recommend products?
- No. We do not publish product picks, sourcing, prices or dosing.
- Does this page say where to buy or how to dose?
- No. We do not publish sourcing, vendors, prices or dosing. We remove those from submissions.
General information only — not medical, legal or regulatory advice. Peptide Confessions does not sell, source or recommend any product or vendor, and nothing here is dosing guidance. Speak with a licensed Canadian healthcare professional or pharmacist about any medication. Editorial process →