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PEG-40 SORBITAN STEARATE.

Valuable CAS 9005-67-8 / SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYING

PEG-40 Sorbitan Stearate is a versatile ethoxylated compound primarily functioning as an emulsifier and surfactant. It facilitates the creation of stable cosmetic formulations by blending immiscible liquids, while also serving as a solubilizer and a potential penetration enhancer for other active ingredients.

Summary

emulsifying surfactant cleansing agent solubilizer humectant thickener texture enhancer lubricant antistatic agent penetration enhancer

Science

Mechanism of Action

This ingredient operates by reducing the surface tension between disparate liquids, effectively enabling the formation and stabilization of emulsions. As a surfactant, it aids in cleansing by helping water mix with oils and dirt. Furthermore, its multifaceted nature allows it to act as a solubilizer, improving the dispersion of ingredients, and to enhance the skin's uptake of various actives, while also providing texture-modifying and humectant properties.

Research

Clinical Evidence

Medium confidence
Effective range 5–20%
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

Information regarding the dusting properties of PEG-40 Sorbitan Stearate is not available in the provided research data.

The Formula

Formulation

Solubility
Water
Optimal pH N/A
0 7 14

Stability

Known for its chemical inertness and enhanced stability, making it compatible with a broad pH spectrum and suitable for diverse active ingredients, emulsions, and solid dispersions.

Safety

Safety Profile

CIR Status
Safe as used
Max tested
25%
Sensitization risk Low

The CIR Expert Panel concluded that PEG-40 Sorbitan Stearate is safe for use in cosmetics at concentrations not exceeding 25%. A critical caveat indicates it should not be applied to damaged skin. There is a recognized potential for trace 1,4-dioxane formation during its ethoxylation process, which can be mitigated through stringent purification steps. The FDA has approved PEG-40 Stearate without limits as a defoaming agent in food packaging materials.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

PEG-40 Sorbitan Stearate is a valuable ingredient, widely recognized for its safety and efficacy in stabilizing formulations, enhancing ingredient delivery, and ensuring optimal product texture across a broad range of cosmetic applications.

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References

Sources