Safety Assessment of Propylene Glycol, Tripropylene Glycol, and PPGs as Used in Cosmetics

@article{Fiume2012SafetyAO,
  title={Safety Assessment of Propylene Glycol, Tripropylene Glycol, and PPGs as Used in Cosmetics},
  author={Monice M. Fiume and Wilma Fowler Bergfeld and Donald V. Belsito and Ronald A. Hill and Curtis D. Klaassen and Daniel C. Liebler and James G. Marks and Ronald C. Shank and Thomas J. Slaga and Paul W. Snyder and F. Alan Andersen},
  journal={International Journal of Toxicology},
  year={2012},
  volume={31},
  pages={245S - 260S}
}
Propylene glycol is an aliphatic alcohol that functions as a skin conditioning agent, viscosity decreasing agent, solvent, and fragrance ingredient in cosmetics. Tripropylene glycol functions as a humectant, antioxidant, and emulsion stabilizer. Polypropylene glycols (PPGs), including PPG-3, PPG-7, PPG-9, PPG-12, PPG-13, PPG-15, PPG-16, PPG-17, PPG-20, PPG-26, PPG-30, PPG-33, PPG-34, PPG-51, PPG-52, and PPG-69, function primarily as skin conditioning agents, with some solvent use. The majority… 

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