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DEXTRIN STEARATE.

Valuable CAS 37307-33-8 / ANTICAKING, SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYING

Dextrin Stearate is a multifunctional ester, synthesizing dextrin and stearic acid. It primarily serves as a sophisticated formulation enhancer, offering stabilizing, emulsifying, and texture-modifying properties, while also contributing to skin hydration and barrier support.

Emulsifying Agent Viscosity Controlling Agent Thickening Agent Stabilizing Agent Film-Forming Agent Anti-Caking Agent Surfactant Moisturizer Skin Soother Barrier Strengthener

Science

Dextrin Stearate functions on multiple levels due to its unique chemical structure as an ester of dextrin and stearic acid. In formulations, it acts as a robust stabilizer and emulsifying agent, promoting uniform product texture and aiding in the dissolution and even dispersion of water-insoluble ingredients. As a dextrin fatty acid ester, it can also create thixotropic gels in liquid oils, exhibiting a 'restoring force' and 'low syneresis properties,' meaning it can solidify into a gel under certain conditions and re-liquefy with applied force. For the skin, the dextrin component provides moisturizing and soothing effects, particularly beneficial for dry and rough complexions, and contributes to strengthening the skin's protective barrier.


Research

Medium confidence
Effective range 2–5%
Optimal

N/A

Key findings

  1. 01 Studies using hyperbranched dextrin at concentrations of 2% and 5% demonstrated significant reductions in the inflammatory marker IL-1α in vitro, and effectively protected against transepidermal water loss (TEWL) in vivo, suggesting direct soothing and barrier-strengthening capabilities.

Transparency

Not commonly dusted

No specific data regarding dusting thresholds or red-flag percentages for Dextrin Stearate is available in the provided research. Its primary role as an oil gelling agent and emulsifier suggests it is not typically associated with dusting concerns.


The Formula

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

Dextrin Stearate, as a dextrin fatty acid ester, readily dissolves in liquid oils when heated to 100°C. It is known for its ability to induce gelation in liquid oils, imparting desirable rheological properties such as 'restoring force' and 'low syneresis,' which contribute to product stability and sensory experience.


Safety

CIR Status
Safe as used
Max tested
33%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has assessed a broad category of polysaccharide gums, including Dextrin Stearate, concluding they are safe for use at current concentrations in cosmetics. While no specific maximum concentration for Dextrin Stearate was defined, polysaccharide gums are generally considered safe up to 33% in powders and up to 30-32% in products for sensitive areas. EWG Skin Deep rates Dextrin Stearate with a 'LOW' hazard for cancer, allergies, immunotoxicity, and developmental/reproductive toxicity. Stearic Acid, a component of Dextrin Stearate, is affirmed as Generally Recognized As Safe (GRAS) by the FDA.


Your Skin

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Unknown
Comedogenicity Unknown

Our Assessment

Valuable

Dextrin Stearate is a valuable ingredient, prized for its versatile formulation benefits as an emulsifier, stabilizer, and texture enhancer, while also offering direct moisturizing and soothing advantages to various skin types.


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