Polypropylene Glycol



No known benefits

Polypropylene Glycol description

Also known by the acronym PPG, polypropylene glycol is a polymer, or large molecule, of propylene glycol. Like propylene glycol, it is used as a humectant and a delivery agent in cosmetics. Despite reports that it can be a skin sensitizer, researchers have found that it does not present a health risk for people when used in cosmetics.

Polypropylene Glycol references

  • Critical Reviews in Toxicology, April 2013, issue 4, pages 363-390

Peer-reviewed, substantiated scientific research is used to assess ingredients in this dictionary. Regulations regarding constraints, permitted concentration levels and availability vary by country and region.

Ingredient ratings


Proven and supported by independent studies. Outstanding active ingredient for most skin types or concerns.


Necessary to improve a formula's texture, stability, or penetration.


Generally non-irritating but may have aesthetic, stability, or other issues that limit its usefulness.


There is a likelihood of irritation. Risk increases when combined with other problematic ingredients.


May cause irritation, inflammation, dryness, etc. May offer benefit in some capability but overall, proven to do more harm than good.


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Not Rated