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live116 compounds · 15 vendors listed · 7 graded · audit of 4 Nov 2026 · prices checked 4 Nov 2026independent · grades can’t be bought

peptide database · 7 graded compounds · 3 measured in people

peptides for hair growth & skin: what the research shows

7 graded compounds were studied for skin & hair, 3 of them in people. Each is graded A to F on published evidence; the ladder shows how far research got, from cell studies to approval.

body systemskin & hair7 compounds studied here · 3 in people
selected systemclick a lit region to explore itdrag to rotate

studied in skin & hair

7 compounds
  1. GHK-Cumeasured in people$0.40/mg
  2. Glutathionemeasured in people$0.08/mg
  3. BPC-157animal or cell studies$5.67/mg
  4. LL-37animal or cell studies$16.00/mg
  5. KPVanimal or cell studies$5.00/mg
  6. TB-500animal or cell studies$6.00/mg
  7. Melanotan-2measured in people$3.00/mg

3D anatomy: Human Reference Atlas reference organs from the NIH Visible Human Project (CC BY 4.0) and BodyParts3D, © The Database Center for Life Science (CC BY-SA 2.1 JP), fitted to each body and simplified by PeptideTech; the adapted BodyParts3D meshes are shared under the same licence. Lymph node clusters, the thyroid, joint capsules and the fat layer are drawn for orientation.

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

all 116 compounds in the database
Graded compounds studied in skin & hair: grade, evidence ladder, US status, body systems, price per mg and research profile
compoundgradehighest rungUS statusbody systemsfrom $/mgstudies
GHK-Cu
copper tripeptide
small human studiesrulemaking pendingskin & hair$0.40research profile
Glutathione
antioxidant tripeptide
small human studiesresearch onlyliverskin & hair$0.08research profile
BPC-157
body protection compound 157
small human studiesrulemaking pendingguttendons & jointsmuscleskin & hair$5.67research profile
LL-37
human cathelicidin
small human studiesrulemaking pendingimmuneskin & hair$16.00research profile
KPV
α-MSH fragment
animal studiesrulemaking pendinggutskin & hair$5.00research profile
TB-500
thymosin β4 fragment
animal studiesrulemaking pendingmuscletendons & jointsheartskin & hair$6.00research profile
Melanotan-2
melanocortin agonist
small human studiesrulemaking pendingskin & hairreproductive$3.00research profile

short answers

questions about peptides for hair growth & skin

Which peptides have been studied for hair growth & skin?
7 graded compounds: GHK-Cu (C), Glutathione (C), BPC-157 (D), LL-37 (D), KPV (D), TB-500 (D), Melanotan-2 (F). Grades run from A (approved, strong human outcome data) to F (contradicted, unsafe, or identity problems).
Which peptides for hair growth & skin were measured in people?
3 of 7: GHK-Cu, Glutathione and Melanotan-2. The others have animal or cell studies only for skin & hair.
Which peptide has the strongest evidence for hair growth & skin?
GHK-Cu: grade C, highest rung small human studies. Human data are small topical skin studies; the injectable form awaits FDA review.
What does a lit region on the body map 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.
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.