Goal · Hair
≈7 min · no account
Usually lands on · GHK-Cu
Can end at no pen
Noticing more hair in the brush?
Hair loss has established, licensed treatments; peptides are not among them. GHK-Cu has preliminary topical hair studies and nothing by injection. The Peptide Checkup shows that honestly and says what to take to a clinician.
01 — Where the Checkup usually lands
One pen is researched for hair.
GHK-Cu is the only pen in the range with any hair data, and that data is topical and preliminary. Expect the Checkup to be cautious. Your answers decide — including whether to buy at all.
- GHK-Cu100 mg / 3 mLSkin quality, firmness and hair goals where a single-compound copper peptide is the fit.£215Details

Why only one
The range is 24 pens and the matcher does not pad the list. If your answers rule this one out, the Checkup ends at no pen rather than the next-nearest thing.
Your answers decide — including whether to buy at all.
02 — What the Checkup checks
Four things it checks for hair.
7 minutes of structured questions — categories, not essays — run through a deterministic rules engine against the evidence and regulatory database, then scored against the range.
- 01What GHK-Cu has actually shown for hair — small topical studies — and what it has not
- 02How that compares with established, licensed treatments
- 03Hormonal, thyroid and autoimmune factors in your history that a clinician would want to know about
- 04Regulatory status of an injectable pen, and what to ask a dermatologist
Research-use pens
Sold for research use only. Not a medicine and not authorised for human consumption. Purchasers must be 18+ and confirm intended use at checkout.
Peptide Checkup
The Peptide Checkup provides educational information and a structured summary of published research and regulatory status. It is not medical advice, does not diagnose or treat any condition, and does not replace a consultation with a qualified healthcare professional.
Hair
Take the 7-minute Checkup for hair.
Not medical advice · Research-use labelling applies · 18+ only · It can say no
≈7 min
Start the Checkup