Biotinoyl tripeptide-1
Also known as Biotinyl-GHK, Procapil (blend)
Low risk, with some supportive trials, but nearly every product blends it with other ingredients, so its own effect is unclear. It is not a substitute for proven hair loss treatment.
Information only. Not medical advice. Talk to a doctor before you start, stop or change anything.
What people claim
- Regrows hair like minoxidil
- Blocks DHT naturally
- Thicker hair in weeks
What the evidence shows
- A 2026 systematic review found 14 human trials of peptide hair products. Formulas containing biotinoyl tripeptide-1 earned a moderate grade of recommendation.[1]
- The review's positive conclusion is about combination products, not this peptide on its own.[1]
- Cosmetic hair products are not tested to the standard of approved hair loss medicines.
Known risks
- Peptide hair formulas were well tolerated in the reviewed trials.[1]
- Pattern hair loss usually keeps progressing without treatment, so months on a product that does little can mean hair you do not get back.
Reported side effects
Moderated user reports are not open yet, so nothing is shown here. They will be labelled as unverified personal accounts.
Legal status
A summary, not legal advice. Rules change, and sport bans are separate.
Cosmetic ingredient
Sold in shampoos and serums. Cosmetics cannot legally claim to treat hair loss.
Cosmetic ingredient
Legal in cosmetics.
Cosmetic ingredient
Legal in cosmetics that make no therapeutic claims.
Cosmetic ingredient
Legal in cosmetics.
Sources
- 1.Peptides for hair growth and treatment of hair loss and alopecia: a systematic reviewJournal of Drugs in Dermatology, 2026
Profile last checked 7 Nov 2026.