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Moumoujus

DIMETHICONE PEG-8 BENZOATE.

Valuable / SKIN CONDITIONING

Dimethicone PEG-8 Benzoate is a sophisticated amphiphilic silicone polymer, a meticulously crafted partial ester of PEG-8 Dimethicone and benzoic acid. It functions as a highly effective emollient, engineered to enhance skin texture, provide a smooth feel, and impart a refined matte finish. This ingredient also forms a breathable protective barrier, proficiently locking in moisture and preventing transepidermal water loss.

Summary

Skin Conditioning Emollient Hydrating Film-forming Mattifying Texture Enhancer Anti-Aging (fine lines) Detackifier

Science

Mechanism of Action

This innovative amphiphilic silicone primarily acts by forming a weightless, protective film upon the skin's surface, which significantly reduces transepidermal water loss, thereby enhancing skin hydration. As an emollient, it meticulously improves the skin's cushion, texture, and imparts an elegant slip to formulations. Furthermore, it contributes to a smoother skin appearance by minimizing fine lines and wrinkles, while simultaneously delivering a desirable matte finish and reducing formulation tackiness.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH 5.5 – 8.5
0 7 14

Stability

This ingredient is water-soluble and maintains stability within a functional pH range of 5.5 to 8.5. For optimal integrity, it should be added to the water phase of formulations and not heated above 50°C (125°F); in emulsions, it should be incorporated after cooling to below 50°C. Hydrolysis studies on a related compound showed 20% degradation at 1% active after 45 days at pH 5, extending to 86 days at pH 8.

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has consistently affirmed the safety of Dimethicone PEG-8 Benzoate, along with other dimethicone copolyols, for cosmetic use under current practices. This conclusion was reconfirmed in 2013/2014 and further supported in a 2019 updated assessment for substituted-methicone polymers, emphasizing safety when formulated to be non-irritating. While a specific maximum safe concentration for Dimethicone PEG-8 Benzoate was not individually established, a related compound, PEG-8 dimethicone, was deemed safe up to 5.6%. The CIR did note insufficient data to determine safety for incidental inhalation in airbrush applications for the broader polymer group.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Verdict

Valuable

Dimethicone PEG-8 Benzoate is a valuable multi-functional ingredient, enhancing skin feel and hydration while contributing to elegant formulation aesthetics across all skin types.

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