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Related Concept Videos

Physical Properties of Ethers02:17

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An ether molecule has a net dipole moment due to the polarity of C–O bonds. Subsequently, boiling points of ethers are lower than those of alcohols of comparable molecular weight and slightly higher than those of hydrocarbons of comparable molecular weight (Table 1).
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The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
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Polymerization generates chiral centers along the entire backbone of a polymer chain. Accordingly, the stereochemistry of the substituent group has a significant effect on polymer properties. Polymers formed from monosubstituted alkene monomers feature chiral carbons at every alternate position in the polymer backbone. Relative to the predominant orientation of substituents at the adjacent chiral carbons, the polymer can exist in three different configurations: isotactic, syndiotactic, and...
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PPG-11 and PPG-15 Stearyl Ether.

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Polypropylene glycol (PPG) ethers, specifically PPG-11 and PPG-15 Stearyl Ether, are safe for cosmetic use. The Expert Panel reviewed new data, confirming their safety in current product types and concentrations.

Keywords:
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Area of Science:

  • Cosmetic Science
  • Dermatology
  • Toxicology

Background:

  • Polypropylene glycol (PPG) ethers are commonly used in cosmetic formulations.
  • Previous safety assessments were conducted in 2001.
  • Updated data on usage patterns and concentrations are crucial for re-evaluation.

Purpose of the Study:

  • To review newly available scientific studies on PPG-11 and PPG-15 Stearyl Ether.
  • To assess updated information on cosmetic product types and concentrations of use.
  • To confirm the safety of these ingredients in cosmetic applications.

Main Methods:

  • Systematic review of recent scientific literature.
  • Analysis of updated data on cosmetic ingredient usage.
  • Evaluation by the Expert Panel for Cosmetic Ingredient Safety.

Main Results:

  • Newly available studies were reviewed since the 2001 assessment.
  • Updated information on product types and concentrations was considered.
  • PPG-11 and PPG-15 Stearyl Ether were evaluated based on current data.

Conclusions:

  • The Expert Panel confirmed the safety of PPG-11 and PPG-15 Stearyl Ether.
  • These ingredients are safe as used in cosmetic products at described concentrations.
  • The findings support the continued use of these cosmetic ingredients.