Mechanism
Vascular permeability and fluid-balance modulation
Proposed modulation of vascular permeability, capillary integrity and extracellular fluid accumulation in peri-orbital skin.
Use cautious wording for cosmetic puffiness claims and avoid treating medical oedema.
00
Biological pathway
Cosmetic claims for acetyl tetrapeptide-5 include reduced glycation and oedema-related fluid retention.
00b
Evidence summary
Published peptide-specific clinical evidence is sparse and largely formulation- or supplier-associated.
00c
Limitations
Mechanism and efficacy remain insufficiently confirmed by independent controlled studies.
01
Peptides linked to this mechanism
Intermedin
Intermedin is an endogenous signalling peptide with physiological relevance; therapeutic administration remains molecule- and indication-specific.
Confidence · supported
Acetyl Tetrapeptide-5
A cosmetic peptide marketed for under-eye puffiness and dark circles. Independent peptide-specific clinical evidence is insufficient.
Confidence · limited
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Conditions in scope