Dermatology
Vascular permeability and fluid-balance modulation
Proposed modulation of vascular permeability, capillary integrity and extracellular fluid accumulation in peri-orbital skin.
Biological pathway
Cosmetic claims for acetyl tetrapeptide-5 include reduced glycation and oedema-related fluid retention.
Evidence summary
Published peptide-specific clinical evidence is sparse and largely formulation- or supplier-associated.
Limitations
Mechanism and efficacy remain insufficiently confirmed by independent controlled studies.