What are peptides?
Peptides are short chains of amino acids, the building blocks of proteins. In skincare and hair care they are used as signals: small messengers that can nudge skin and follicle cells toward repair, renewal, or collagen support. The catch is that "peptide" covers a huge range of very different molecules, and their evidence ranges from decent to nonexistent. The word on a label tells you almost nothing about whether it works.
GHK-Cu, the copper peptide
GHK-Cu Early evidence for hair, also called copper tripeptide-1, is the peptide most worth knowing. It is a small copper-binding peptide originally studied for wound healing and skin repair, where the evidence is more mature. For hair, laboratory and early studies suggest it may support the follicle environment, but large, high-quality human hair trials are still lacking. That is why we call it promising rather than proven.
Do peptides work for hair loss?
This is the question people most want answered, so here it is plainly: peptides are not a substitute for the treatments with real evidence, like minoxidil and finasteride. GHK-Cu is the best-supported hair peptide and can be a reasonable add-on, but the human evidence is early. Many peptides sold online for hair, including several popular in wellness circles, have essentially no hair-specific clinical evidence. If a product promises dramatic regrowth from peptides alone, treat that as marketing, not medicine.
The sensible way to use peptides for hair is as an adjunct inside a broader, evidence-led plan, which is exactly how our hair assessment and formula approach treats them.
Do peptides work for skin?
The skin story is a bit stronger. Certain peptides have reasonable evidence for the cosmetic appearance of firmness and texture, and copper peptides have a longer track record in skin repair. Benefits are generally modest and relate to appearance. Peptides work best supporting proven actives, for example alongside tretinoin in a considered routine, rather than replacing them.
The honest hierarchy of evidence
- Reasonable evidence: GHK-Cu for skin repair; select peptides for the appearance of firmness.
- Early and promising: GHK-Cu for hair.
- Little to no hair evidence: most other marketed hair peptides.
We built our formulas around this hierarchy on purpose, and our builder shows each ingredient's evidence grade so you are never guessing.
Want peptides done properly?
Build a formula and a pharmacist confirms which peptides make sense, keeps incompatible ones apart, and a prescriber reviews the whole thing.
Build my formula →Where to get compounded peptides in Vancouver and BC
SkinOnMain, operated with CareBridge Pharmacy on Main Street in Vancouver, can include suitable peptides such as GHK-Cu in a custom compounded formula. A pharmacist checks compatibility and stability, a prescriber reviews your case where a prescription base is involved, and your formula ships free across the Lower Mainland and British Columbia, including Vancouver, Burnaby, Richmond, Surrey, Coquitlam, Langley, and the Fraser Valley.
Frequently asked questions
Do peptides work for hair loss?
The evidence is early. GHK-Cu is the best-supported hair peptide but human trials are limited, so peptides are best used alongside proven treatments like minoxidil, not as a cure.
What is GHK-Cu?
GHK-Cu (copper tripeptide-1) is a small copper-binding peptide studied for skin repair and, more recently, hair. It is the most-evidenced peptide for hair in a field where most have little data.
Do peptides work for skin?
Some peptides have reasonable evidence for the appearance of firmness and texture, and copper peptides are studied for skin repair. Benefits are modest and cosmetic.
Can I get compounded peptides in Vancouver?
Yes. SkinOnMain with CareBridge Pharmacy can include suitable peptides in a custom formula after pharmacist and prescriber review, then ship across BC.
Can copper peptides be mixed with vitamin C or retinol?
Not in the same bottle. Copper peptides degrade with vitamin C or retinoids, so a pharmacist keeps them in separate products.