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PEG/PPG-20/29 DIMETHICONE.

Valuable CAS - / SURFACTANT - EMULSIFYING

PEG/PPG-20/29 Dimethicone is a multi-functional silicone copolymer designed to enhance the sensorial properties and stability of skincare formulations. It delivers emollient, conditioning, and humectant benefits while acting as an effective emulsifier and emulsion stabilizer.

Summary

Emollient Emulsifying Conditioning Humectant Emulsion Stabilizer Plasticizer Anti-foaming agent Cleansing agent Antistatic agent Solubilizing agent Lubricating agent Dispersing agent Film-forming agent Adsorbing agent

Science

Mechanism of Action

This ingredient interacts with the skin as an emollient, creating a smooth surface and helping to minimize moisture loss. It functions as a humectant by drawing and retaining moisture. Within formulations, it acts as a highly effective emulsifying agent, promoting the uniform blending of oil and water, and as an emulsion stabilizer, preventing phase separation. Additionally, its cleansing mechanism facilitates the emulsification of skin oils and impurities with water for efficient rinsing. It also contributes antistatic, solubilizing, lubricating, dispersing, film-forming, and adsorbing properties to products.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Key findings

  1. 01 Clinical evaluations on 39 subjects confirmed that Dimethicone Copolyol (an umbrella term encompassing PEG/PPG-20/29 Dimethicone) in a 40% aqueous solution and in undiluted form was not a primary skin irritant.
  2. 02 Further testing on 201 volunteers demonstrated Dimethicone Copolyol to be non-irritating and non-sensitizing.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH N/A
0 7 14

Stability

The ingredient exhibits general stability, though performance may be compromised at extreme pH levels.

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel concluded that 'Dimethicone Copolyol' (a category including PEG/PPG-20/29 Dimethicone) is safe as used, a determination initially made in 1982 and reaffirmed in 2005. A tentative report in 2014 further supported the safety of Polyoxyalkylene Siloxane Copolymers, Alkyl-Polyoxyalkylene Siloxane Copolymers, and related ingredients, including PEG/PPG-20/29 Dimethicone. No specific opinion from the SCCS was identified, and the FDA does not assign a specific regulatory 'status' for this cosmetic ingredient.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

PEG/PPG-20/29 Dimethicone is a valuable, safe, and multi-functional ingredient known for enhancing product texture, stability, and delivering conditioning and emollient benefits across all skin types.

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