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ASTRAGALUS GUMMIFER GUM.

Valuable CAS 9000-65-1 / BINDING, EMULSION STABILISING, FILM FORMING, FRAGRANCE, VISCOSITY CONTROLLING

A natural polysaccharide resin harvested from the Astragalus gummifer shrub, this plant-derived exudate is essential for creating sophisticated textures. It serves as a high-performance botanical rheology modifier that balances structural integrity with a refined skin feel.

Viscosity controlling Emulsion stabilizing Film forming Binding

Science

It utilizes two distinct polysaccharide fractions—water-soluble tragacanthin and water-swellable bassorin—to form a flexible, breathable film on the stratum corneum. This barrier limits transepidermal water loss (TEWL) while its anionic structure stabilizes emulsions by increasing aqueous viscosity and preventing oil droplet coalescence.


Research

High confidence
Effective range 1.5–10%
Optimal

6%

Key findings

  1. 01 Comparative research indicates that a 6% concentration optimizes wound closure and epithelial repair efficiency.
  2. 02 Human clinical safety trials confirm that applications up to 10% are non-phototoxic and non-reactive.
  3. 03 Dermal assessments at 1.5% demonstrate zero sensitization or irritation in human subjects.

Transparency

Not commonly dusted
Min. effective
1.5%
Red flag below
0.5%

While often used at low levels strictly for stabilization, concentrations below 1.5% may fail to provide the clinically documented film-forming and skin-soothing benefits.


The Formula

Solubility
Water
Optimal pH 2 – 6
0 7 14

Stability

Highly resilient in acidic environments down to pH 2.0; reaches peak viscosity between pH 5.0 and 6.0. Requires a 24-hour hydration period for full structural development.

Synergies

  • Low pH actives
  • Humectants
  • Non-ionic emulsions

Conflicts

  • Cationic polymers
  • High-proof alcohol
  • Bismuth salts
  • Silver salts

Safety

CIR Status
Safe as used
Max tested
10%
Pregnancy
Safe
Sensitization risk Low

Recognized as FDA GRAS (Generally Recognized As Safe). Its long history in food and dental applications underscores its high systemic safety profile.


Your Skin

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Valuable

A versatile, acid-stable botanical gum that provides both formula architecture and protective film-forming benefits across all skin types.


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