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SORBETH-30 PENTAISOSTEARATE.

Valuable / SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYING

Sorbeth-30 Pentaisostearate is a multifunctional cosmetic ingredient primarily utilized as an emulsifier and surfactant. It facilitates the stable blending of disparate phases like oil and water, essential for many skincare formulations. This ingredient also contributes to the even spread of products and supports effective cleansing.

Summary

emulsifying surfactant

Science

Mechanism of Action

This ingredient operates by modifying interfacial tension, allowing immiscible liquids, such as oil and water, to form stable emulsions. As a surfactant, it reduces the surface tension of a formulation, promoting uniform product distribution on the skin. This surfactant property also aids in cleansing by enabling water to mix more readily with oils and impurities, facilitating their removal. While direct data for Sorbeth-30 Pentaisostearate is limited, related polyethoxylated sorbitan esters are known to form a lightweight, protective film that helps retain skin moisture and enhance product texture, imparting a silky feel.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Both
Optimal pH N/A
0 7 14

Stability

For optimal integration, Sorbeth-30 Pentaisostearate, or related esters, are typically incorporated into the oil phase of a formulation. The ingredient demonstrates heat tolerance; however, it is advisable to avoid sustained exposure to temperatures exceeding 80°C to maintain stability.

Safety

Safety Profile

CIR Status
Safe with restrictions
Max tested
9.1%
Sensitization risk Low

Sorbeth-30 Pentaisostearate is part of a larger group of 80 polyethoxylated sorbitan or sorbitol esters (polysorbates) comprehensively assessed by the Cosmetic Ingredient Review (CIR) Expert Panel. The CIR Panel deemed this class of ingredients safe for cosmetic use under current practices of use and concentration, provided they are formulated to be non-irritating. Although Sorbeth-30 Pentaisostearate itself was once noted as not being widely used, the 9.1% maximum concentration refers to a related sorbitan ester (sorbitan triisostearate) within the same CIR-assessed category, providing a reference for typical upper limits in cosmetic formulations.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

Sorbeth-30 Pentaisostearate is a valuable ingredient for enhancing product stability and performance, serving as an effective emulsifier and surfactant with a favorable safety profile when properly formulated.

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