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Moumoujus

PROPYLENE GLYCOL ALGINATE.

Valuable CAS 9005-37-2 / BINDING, VISCOSITY CONTROLLING

Propylene Glycol Alginate (PGA) is a versatile polymer, recognized for its dual hydrophilic and lipophilic properties that make it an effective thickener, stabilizer, and emulsifier. It enhances product texture, prevents separation, and maintains a consistent, uniform feel within formulations.

Summary

binding viscosity controlling emulsifying stabilizing film-forming

Science

Mechanism of Action

PGA functions primarily as a surface-active agent, stabilizing oil-in-water emulsions by bridging immiscible phases. Its unique structure enables it to control viscosity, act as a film-former, and prevent ingredient sedimentation. These properties collectively improve the sensory experience and integrity of cosmetic and pharmaceutical preparations.

Research

Clinical Evidence

Insufficient-data confidence
Effective range 0.3–3%
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

Propylene Glycol Alginate is primarily a formulation aid for texture and stability, rather than an active ingredient with direct skin benefits. It is therefore not typically associated with 'dusting' concerns related to exaggerated efficacy claims.

The Formula

Formulation

Solubility
Water
Optimal pH 3 – 6
0 7 14

Stability

PGA solutions are most stable within a pH range of 3 to 6. Prolonged storage at elevated temperatures can gradually reduce solubility. Rapid saponification occurs in alkaline solutions. While susceptible to microbial spoilage, requiring preservation, PGA uniquely resists gelation from polyvalent cations like calcium, distinguishing it from sodium alginate and making it suitable for low pH or calcium-containing formulations.

Conflicts

  • Alkaline solutions (rapid saponification)

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk Low

Propylene Glycol Alginate is widely regarded as a nontoxic and non-irritant material. Toxicological assessments confirm it is not absorbed intact by the human digestive system, breaking down into harmless components. It is recognized as safe for consumption by the US FDA and other food safety authorities, with an Acceptable Daily Intake (ADI) of 0-70 mg/kg body weight set by JECFA.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

Propylene Glycol Alginate is a valuable formulation ingredient, offering robust thickening, stabilizing, and emulsifying properties with a low irritancy profile, significantly enhancing product texture and consistency.

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