the evidence atlas · 36 compounds graded A to F · 13 body systems
skin & hair: what peptide research shows
7 graded compounds were studied for skin & hair. Each is graded A to F on published evidence; the ladder shows how far research got, from cell studies to approval.
selected systemclick a glowing region to explore itclick a region · drag to rotate
- GHK-Cumeasured in people$0.40/mg
- Glutathionemeasured in people$0.08/mg
- BPC-157animal or cell studies$5.67/mg
- LL-37animal or cell studies$16.00/mg
- KPVanimal or cell studies$5.00/mg
- TB-500animal or cell studies$6.00/mg
- Melanotan IImeasured in people$3.00/mg
research market · not for human use
A lit region shows where studies measured an effect, not that a compound works there. Most research-market compounds are not FDA-approved.
Evidence grades come from the published literature; no vendor can pay for a grade or a ranking. Some outbound links are affiliate links; they never affect grades, scores or order.
skin & hair
evidence table
| compound | grade | highest rung | US status | body systems | from $/mg |
|---|---|---|---|---|---|
| GHK-Cu copper tripeptide | small human studies | rulemaking pending | skin & hair | $0.40 | |
| Glutathione antioxidant tripeptide | small human studies | research only | liver, skin & hair | $0.08 | |
| BPC-157 body protection compound 157 | small human studies | rulemaking pending | gut, tendons & joints, muscle, skin & hair | $5.67 | |
| LL-37 human cathelicidin | small human studies | rulemaking pending | immune, skin & hair | $16.00 | |
| KPV α-MSH fragment | animal studies | rulemaking pending | gut, skin & hair | $5.00 | |
| TB-500 thymosin β4 fragment | animal studies | rulemaking pending | muscle, tendons & joints, heart, skin & hair | $6.00 | |
| Melanotan II melanocortin agonist | small human studies | rulemaking pending | skin & hair, reproductive | $3.00 |
short answers
atlas questions
What is the evidence atlas?
A map of where peptides have been studied in the body and how strong that research is. Each compound has one grade from A (approved, strong human outcome data) to F (contradicted, unsafe, or identity problems), plus the highest rung of evidence it reached.
What is the evidence ladder?
Six rungs: cell studies, animal studies, small human studies, a phase 2 trial, a phase 3 trial, approval somewhere in the world. The ladder shows how far research got; the grade says what it found. AOD-9604 reached phase 2b and still grades F because the trial failed.
What does a glowing region mean?
That published studies measured an effect there. Mint means it was measured in people; periwinkle means animals or cells only. A lit region is not a claim that a compound works there.
Can a vendor pay for a better grade or ranking?
No. Evidence grades come from the published literature and vendor grades from lab data. Some outbound links are affiliate links; they never affect grades, scores or order.
Is this medical advice?
No. PeptideTech is an independent information service. Research-market compounds are sold as research chemicals and most are not approved for use in people.