TB-500 for Hair: What the Evidence Shows
What human and animal studies show about TB-500 for hair, how strong that evidence is, and what is still unproven.
- Strongest evidence
- Animal
- Human studies
- None found
- with an outcome for hair, in our evidence file (PubMed search, 2 Oct 2026)
- Animal studies
- 1
- with an outcome for hair, in our evidence file (PubMed search, 2 Oct 2026)
- Studies we summarised
- 1
- with an outcome for hair
Evidence for hair
Each row is an outcome related to hair from a published study, strongest design first. Animal and cell results are labelled and are not human results. User reports are not counted as evidence here.
| Outcome | Result | Study type | Source |
|---|---|---|---|
| Hair regrowth after depilation | Hair regrowth was faster in mice overexpressing Tbeta4 and slower in knockout mice (genetic models, not injected peptide). | Animal · mouse (transgenic overexpression and knockout) (not a human result) | PloS one 2015, PMID 26083021 |
TB-500 and hair are not in our PubMed count ledger yet; the rows above come from our evidence file (PubMed search, 2 Oct 2026). Grades follow our evidence scale.
How strong is it?
A human randomized trial outweighs any number of animal studies. Animal and cell results show a mechanism worth testing, not that it works in people.
Other peptides people research for hair
All peptides for hair, comparedCommon questions
Does TB-500 help with hair?
The strongest study we summarise for hair is animal evidence, across 1 study with an outcome for hair. That is not proof it works in people.
Is TB-500 approved for hair?
No. TB-500 is not FDA approved for any use, including hair.
What is the best peptide for hair?
There is no single answer. Our hair overview compares each candidate by evidence grade and legal status rather than by popularity.
More on TB-500
Sources
- 1Thymosin Beta-4 Induces Mouse Hair Growth.PloS one · 2015PMID 26083021Accessed 2 Oct 2026
Found an error? Report a correction.