Capixyl
A patented hair-complex ingredient pairing a biotin peptide with a tetrapeptide—common in scalp serums marketed for thinning hair.
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✨ real molecule sketch
See this on a product label?
Biotinoyl Tripeptide-1
Hair and lash products use INCI names too—often longer chemical names beside marketing names like Capixyl.
Structure (cute edition)
✨ real molecule sketch
This peptide is a short chain of about 3 amino acids—think of it as a tiny protein necklace on your label.
INCI: Biotinoyl Tripeptide-1 · ~3 amino acids in our simplified view
Research & public records
Counts and links from public databases (PubMed, ClinicalTrials.gov, Wikidata, NIH drug nomenclature). Educational only — not medical advice.
Knowledge base: chemical compound
PubMed: 1 indexed papers (search PubMed)
- Topical Alternatives for Hair Loss: Beyond the Conventional. · International journal of trichology
- An Herbal Extract Combination (Biochanin A, Acetyl tetrapeptide-3, and Ginseng Extracts) versus 3% Minoxidil Solution for the Treatment of Androgenetic Alopecia: A 24-week, Prospective, Randomized, Triple-blind, Controlled Trial. · The Journal of clinical and aesthetic dermatology
Clinical trials: 133 studies on ClinicalTrials.gov (view search)
- A Single-Group Study to Evaluate the Effects of an Eyelash Serum on Improving Eyelash Growth · COMPLETED
- Prostaglandin Analog Eyelash Serum and Ocular Surface Health: A Prospective Study · COMPLETED
- Stem Cell Transplantation for Hematological Malignancies · TERMINATED
- Early Administration of ATG Followed by Cyclophosphamide, Busulfan and Fludarabine Before a Donor Stem Cell Transplant in Patients With Hematological Cancer · COMPLETED
- Genetically Engineered PBMC and PBSC Expressing NY-ESO-1 TCR After a Myeloablative Conditioning Regimen to Treat Patients With Advanced Cancer · TERMINATED
- Busulfan Plus Clofarabine Followed by Allogeneic Hematopoietic Stem Cell Transplantation · COMPLETED
- Fludarabine and Busulfan Followed by Donor Peripheral Stem Cell Transplant and Antithymocyte Globulin, Tacrolimus, and Methotrexate in Treating Patients With Myeloid Cancer · COMPLETED
- Donor Stem Cell Transplant After Busulfan, Fludarabine, and Antithymocyte Globulin in Treating Patients With Hematological Cancer · COMPLETED
ChEMBL: MACROCYCLIC TRIPEPTIDE MOTIF
What brands say it does
Capixyl combines Biotinoyl Tripeptide-1 (sometimes listed separately) with Acetyl Tetrapeptide-3 in a glycol base. Brands position it to support the appearance of denser, healthier-looking hair at the follicle level. It is a cosmetic active, not a drug—results are gradual and vary by person.
Where you’ll find it
Scalp serums, hair-density drops, and fortifying treatments from brands like Nécessaire and drugstore peptide hair lines.
Other names you might see
Biotinoyl Tripeptide-1
Acetyl Tetrapeptide-3
Butylene Glycol complex
Compare with similar peptides
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Educational only—not medical advice. Hair loss has many causes; see a dermatologist or trichologist for persistent thinning.