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PEG/PPG-18/4 COPOLYMER.

Valuable CAS 9003-11-6 (generic) / SOLVENT

PEG/PPG-18/4 Copolymer is a synthetic polymer engineered to optimize the physical properties of skincare formulations. It functions as a versatile emulsifier, solvent, and rheology modifier, enhancing product stability and texture. This ingredient contributes to a smooth consistency and improved spreadability across various cosmetic applications.

Summary

Solvent Emulsifier Surfactant Thickening Agent Solubilizer

Science

Mechanism of Action

As a polyether copolymer, PEG/PPG-18/4 Copolymer primarily influences the structural integrity and sensorial attributes of cosmetic formulations rather than directly interacting with skin biology. It acts as an effective solvent, facilitating the dissolution and dispersion of other ingredients. Its emulsifying properties prevent the separation of oil and water phases, ensuring product homogeneity. Additionally, it functions as a surfactant to reduce surface tension and as a thickening agent, allowing for precise control over product viscosity and the formation of desirable gel textures.

Research

Clinical Evidence

Insufficient-data confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH N/A
0 7 14

Stability

While precise pH range data for PEG/PPG-18/4 Copolymer is not extensively detailed, related PEG/PPG block copolymers are known to exhibit colloidal stability across broad pH spectrums.

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk Moderate

The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that PEG/PPG-18/4 Copolymer, categorized under PEG Propylene Glycol Derivatives, is safe for use in cosmetic formulations, notably removing prior advisories against its use on compromised skin. However, the Environmental Working Group (EWG) has identified moderate concerns regarding its environmental persistence and potential for bioaccumulation, as well as low-moderate concerns for non-reproductive organ system toxicity. There are also considerations regarding potential trace contamination from manufacturing impurities such as ethylene oxide and 1,4-dioxane. Although generally well-tolerated, some individuals may experience isolated instances of skin irritation or allergic reactions, prompting a recommendation for a preliminary patch test.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
No Sensitive
Irritancy Unknown
Comedogenicity Unknown

Our Assessment

Verdict

Valuable

PEG/PPG-18/4 Copolymer is a valuable formulation ingredient, affirmed as safe by CIR for enhancing product texture and stability, though its potential for individual sensitivities and impurity concerns warrant careful consideration.

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