Growth, thickness, loss

Peptides for hair

Sorted by strength of evidence, never by popularity. A higher grade means stronger proof, not that something is safe or right for you.

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4 profiles

B

Smaller human trials

1

Supplement
Collagen peptides
Hydrolysed collagen, Collagen hydrolysate
B
Main risk: Mostly wasted money, and animal or fish allergens
Legal
Sold as a supplement
Cost a month
$12 to $40

C

Early or weak human data

2

Skincare
Biotinoyl tripeptide-1
Biotinyl-GHK, Procapil (blend)
C
Main risk: Low risk. The main cost is time if hair loss progresses
Legal
Sold as a cosmetic
Cost a month
$15 to $60
Skincare
GHK-Cu
Copper peptide, Copper tripeptide-1
C
Main risk: Injected forms: immune reactions
Legal
Sold as a cosmetic
Cost a month
$15 to $60

D

Anecdote only

1

Research compound
PTD-DBM
CXXC5 blocking peptide
D
Main risk: No human safety or effect data
Legal
Not approved
Cost a month
Not priced