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ISOBUTYL/METHOXY PEG-10 POLYSILSESQUIOXANE.

Valuable / VISCOSITY CONTROLLING

ISOBUTYL/METHOXY PEG-10 POLYSILSESQUIOXANE is a sophisticated hybrid polymer, uniquely designed with an inorganic silsesquioxane core and organic PEG and isobutyl groups. This ingredient excels at enhancing formulation aesthetics by imparting a smooth, comfortable, and non-greasy feel to the skin, positioning it as a versatile emollient and processing aid.

Summary

Viscosity Controlling Skin Conditioning Compatibilizer Dispersant Active Carrier Film Former

Science

Mechanism of Action

Operating primarily as a viscosity controlling agent, this ingredient refines the texture and consistency of formulations. Its innovative hybrid structure, which encompasses both hydrophobic and hydrophilic characteristics, enables it to function as an effective compatibilizer, seamlessly integrating diverse ingredients. It also serves as a dispersant and a carrier, facilitating the delivery of active compounds. Furthermore, ISOBUTYL/METHOXY PEG-10 POLYSILSESQUIOXANE contributes to skin conditioning by forming a subtle, non-occlusive film and offers a lightweight, translucent wax alternative to traditional petrolatum.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Key findings

  1. 01 Observed very slight to well-defined, transient erythema which resolved completely within 7 days. This study evaluated irritation potential rather than efficacy for beneficial skin effects.

Transparency

Dusting Analysis

Not commonly dusted

No data available to indicate common dusting issues for this ingredient.

The Formula

Formulation

Solubility
Oil
Optimal pH N/A
0 7 14

Synergies

  • Acts as an excellent compatibilizer for diverse ingredients, enhancing overall formulation stability and homogeneity.
  • Functions as a carrier for active ingredients, potentially improving their dispersion and delivery.

Safety

Safety Profile

CIR Status
Safe as used
Max tested
4.9%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that polysilsesquioxanes, including ISOBUTYL/METHOXY PEG-10 POLYSILSESQUIOXANE, are safe for use in cosmetic formulations. While a high 100% concentration caused transient erythema in rabbit irritation studies, this reaction resolved within 7 days, and the ingredient is not considered a primary dermal irritant under typical cosmetic use conditions. The maximum reported concentration in cosmetic applications is 4.9%.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

ISOBUTYL/METHOXY PEG-10 POLYSILSESQUIOXANE is a valuable ingredient, enhancing the sensory elegance and textural performance of formulations, with a well-established safety profile for cosmetic use up to 4.9%.

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