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PEG/PPG-35/40 COPOLYMER.

Valuable CAS - / CLEANSING, SOLVENT, SURFACTANT - CLEANSING

PEG/PPG-35/40 Copolymer is an amphiphilic block copolymer serving multiple functions in skincare formulations. It primarily acts as a solubilizer and emulsifier, while also contributing as a humectant to enhance moisture retention.

Summary

Solubilizer Solvent Surfactant Humectant Emulsifier Consistency Enhancer Binding Agent Softening Agent Fixative

Science

Mechanism of Action

This ingredient functions as an effective solubilizer and solvent, facilitating the uniform dissolution of diverse substances such as active ingredients, fragrance components, and colorants within a formulation. Its surfactant properties assist in cleansing and stabilize emulsions, particularly water-in-oil systems, thereby improving sensory performance and pigment dispersion. As a humectant, it helps attract and retain moisture in the skin. Patent-cited benefits suggest potential roles in increasing filaggrin production, enhancing skin hydration and occlusion, inhibiting inflammatory markers like TNFα, reducing oxidants, and protecting cells from sun-induced damage.

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 N/A
0 7 14

Stability

Block copolymer surfactants, including this ingredient, are sensitive to excessive heat. Elevated temperatures can induce oxidative degradation, resulting in discoloration, a decrease in pH, increased acidity, and potentially a faint aldehydic odor. To maintain product integrity, avoid re-melting partially used solid products and do not store solid forms above their melting point for extended durations without an inert gas blanket, such as nitrogen.

Conflicts

  • High heat
  • Oxidizing agents
  • Damaged skin

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk Low

The CIR Expert Panel has deemed this class of ingredients (alkyl PEG/PPG ethers) safe for use in cosmetics when formulated to be non-irritating. It generally poses negligible ocular or dermal irritation and exhibits very low acute and chronic toxicity on intact skin. However, its application on compromised or damaged skin is strictly contraindicated. Manufacturers are advised to diligently control and remove potential impurities such as ethylene oxide and 1,4-dioxane.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

PEG/PPG-35/40 COPOLYMER is a valuable multifunctional ingredient, widely utilized for its roles as a solubilizer, emulsifier, and humectant, provided it is properly formulated and not applied to compromised skin.

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