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PeptiBrief
Mechanism

Extracellular-matrix and hair-follicle support

Modulation of perifollicular extracellular-matrix proteins and signalling associated with follicle anchoring and hair growth.

Do not present combination-product evidence as proof of acetyl tetrapeptide-3 monotherapy.
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Biological pathway

Acetyl tetrapeptide-3 is marketed as a laminin- and extracellular-matrix-supporting peptide and has been studied within multi-ingredient hair-loss formulations.

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Evidence summary

A small randomized trial of a combination containing acetyl tetrapeptide-3 reported hair-density improvement.

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Limitations

The peptide contribution cannot be isolated from biochanin A, ginseng extracts and the complete formulation.
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Peptides linked to this mechanism

Acetyl Tetrapeptide-3

A topical cosmetic hair peptide studied mainly as part of multi-ingredient products. Combination-trial evidence does not establish peptide-specific hair-growth efficacy.

Confidence · limited
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ImportantPeptiBrief is an educational information platform. It does not diagnose, prescribe, sell peptides, recommend dosing, encourage self-experimentation or replace qualified medical care. Published scientific evidence is kept separate from community observations and uncertainty.