botanical
Fenugreek Seed Extract
Appearing in clean-beauty lip formulas with volumising and conditioning claims. Trigonelline and mucilage content provide the mechanism basis for lip plumping and moisture-binding claims.
Benefits
- Mucilage — hygroscopic film-forming on lip surface
- Trigonelline with reported circulation-enhancing activity
- Anti-inflammatory saponin content
- Natural source of niacin (nicotinic acid derivative)
- Conditioning fatty acid content
Example uses
- Lip glosses with plumping claims
- Conditioning lip masks
- Volumising lip serums
- Lip balms
- Lip-focused skincare
Mechanism of action
Mucilage fraction forms a hygroscopic film on the lip surface, temporarily increasing lip surface smoothness and volume perception via physical swelling. Trigonelline may have mild vasodilatory activity, increasing local microcirculation — the proposed mechanism for volumising claims. Neither mechanism is independently validated at typical cosmetic extract concentrations.
Clinical evidence · Emerging
Brand-generated in vitro and consumer perception studies. No independent RCTs for lip volumising claims.
Effective concentration range
0.1–2%
Formulation notes
Water-soluble mucilage component; pH stable in cosmetic range. May contribute viscosity in aqueous formulations.
Watchouts
Topical volumising claims are based on theoretical circulation enhancement or mucilage film formation — not mechanistically equivalent to injectable fillers. Evidence base is largely brand-generated.
Controversies & overclaims
Lip volumising claims significantly exceed available clinical evidence. The 'natural filler' narrative is marketing hyperbole.
Market positioning
Sold as natural lip plumper. The mucilage film-forming mechanism supports minor smoothing effects; the volumising claim overstates the available evidence.
Comedogenicity
0 / 5
Sensitisation risk
Low
INCI & aliases
Trigonella Foenum-Graecum Seed Extract
trigonella foenum-graecum seed extract · methi extract
Clean beauty perception
Accepted in clean beauty as an Ayurvedic botanical. Lip volumising claims are not substantiated in independent RCTs.
Related ingredients
Graph relationships
Timeline