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Moumoujus

ACACIA CATECHU GUM.

Questionable CAS 8001-76-1 / FILM FORMING, FRAGRANCE

A water-soluble polysaccharide derived from Acacia catechu that serves as a multifunctional ingredient combining film-forming, thickening, and skin-brightening properties. Rich in catechins and tannins, it demonstrates tyrosinase inhibition capabilities while providing texture enhancement and humectant benefits. Its dual role as both a functional excipient and active ingredient makes it particularly valuable in pigmentation-targeting formulations.

Summary

viscosity controlling adhesive masking film-forming brightening

Science

Mechanism of Action

Functions through multiple pathways: creates protective films on skin surface via polysaccharide chains, inhibits tyrosinase enzyme activity through catechin and tannin content (reducing melanin synthesis), and provides moisture retention through humectant polysaccharide structure that forms a soothing barrier layer.

Research

Clinical Evidence

Medium confidence
Effective range 1–9%
Optimal

3%

Key findings

  1. 01 120 mg/ml extract demonstrated 61.58% tyrosinase inhibition with SPF 24 contribution and 90% subject tolerance (ResearchGate 2025)
  2. 02 1% concentration in mascara showed non-irritating results via EpiOcular tissue assay (CIR 2025)

Transparency

Dusting Analysis

Not commonly dusted

Primary use as functional ingredient in specific applications like mascaras and brightening creams rather than widespread cosmetic dusting

The Formula

Formulation

Solubility
Water
Optimal pH 3 – 7.4
0 7 14

Stability

Maintains viscosity stability in acidic conditions (pH 3.0-4.0) and remains functional up to pH 7.4 in gel formulations, though requires robust preservation due to microbial susceptibility

Synergies

  • kojic acid
  • vitamin C
  • niacinamide

Conflicts

  • high ethanol concentrations
  • strong electrolytes
  • anionic surfactants

Safety

Safety Profile

CIR Status
Insufficient data
Max tested
9%
Sensitization risk Low

CIR Expert Panel cited lack of detailed chemical characterization and sensitization data compared to approved Acacia Senegal Gum, though preliminary studies show good tolerance

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
No Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Verdict

Questionable

Promising multifunctional ingredient with demonstrated brightening efficacy, but insufficient safety data limits confidence in widespread cosmetic use.

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