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PEG/PPG-20/20 COPOLYMER.

Valuable CAS - / CLEANSING, SOLVENT, SURFACTANT - CLEANSING

This versatile silicone-based copolymer, also known as PEG/PPG-20/20 Dimethicone, serves multiple functions in skincare. It acts as an emollient, providing a smooth skin feel, a conditioning agent for moisture, and a robust emulsion stabilizer to enhance product integrity.

Summary

Emollient Emulsifier Stabilizer Skin Conditioning Agent Humectant Surfactant Film Former Slip Modifier Foam Builder

Science

Mechanism of Action

PEG/PPG-20/20 COPOLYMER works by forming a film on the skin, contributing to a silky, non-greasy feel and improving spreadability. It helps retain moisture as a conditioning agent and humectant, while also stabilizing emulsions, acting as a surfactant, and modifying the product's texture and slip for an optimized user experience.

Research

Clinical Evidence

High confidence
Effective range 0.1–10%
Optimal

2%

Key findings

  1. 01 Demonstrates stability and compatibility at 0.1% in body wipe formulations within a pH range of 4.5-5.0.
  2. 02 Effective as a co-emulsifier at 0.5-5% to improve skin feel and product stability in various formulations including creams, lotions, and serums.
  3. 03 Shown to be non-irritating and non-sensitizing in undiluted form on 50 subjects, within the broader Dimethicone Copolyols category.
  4. 04 Functions as a silicone surfactant in alcoholic pump-foam compositions at 1-10%, with optimal performance typically observed between 2-5%.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Both
Optimal pH 4.5 – 5
0 7 14

Stability

Exhibits stability within a pH range of 4.5-5.0 in formulations. Related polymers are noted to maintain stability across a wide pH spectrum.

Synergies

  • Functions effectively as a co-emulsifier, enhancing product stability and skin feel in conjunction with other ingredients.

Conflicts

  • Potential for hazardous impurities like ethylene oxide and 1,4-dioxane if not sourced from suitably refined grades.
  • May not be sufficient as a standalone emulsifier in formulations with high water and clay content.

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk Low

The CIR Expert Panel deems Dimethicone Copolyols, including PEG/PPG-20/20 Dimethicone, safe for cosmetic use, provided formulations are non-irritating. Due to its ethoxylated nature, manufacturers must ensure minimal levels of impurities such as ethylene oxide and 1,4-dioxane, with FDA recommending 1,4-dioxane below 1 ppm. Some product formulations containing this ingredient have been self-classified as eye irritants at low levels, thus advising caution near the eyes.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

PEG/PPG-20/20 COPOLYMER is a valuable multifunctional silicone copolymer, enhancing product aesthetics and stability while offering skin conditioning benefits with a low risk of irritation or comedogenicity when properly formulated.

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