Propyl Gallate



No known benefits

Propyl Gallate at a glance

  • Synthetic antioxidant used in skin care formulas to reduce oxidative damage and enhance stability
  • Protects fats and oils in cosmetics products from becoming rancid
  • Comes as a white to beige crystalline powder in its raw material form
  • Recommended in concentration of 0.1% or less
  • Also used an additive to prevent lipid oxidation in foods

Propyl Gallate description

Propyl gallate is an ester of the antioxidant gallic acid. Just like that acid, it functions as an antioxidant and helps protect the fats and oils used in cosmetics from becoming rancid. As a raw material, propyl gallate appears as a white to beige crystalline powder. In 2007, the Cosmetic Ingredient Review Expert Panel recommended limiting propyl gallate to 0.1% in cosmetic formulations, due to potential sensitisation issues at higher concentrations. Reports show the vast majority of cosmetic formulations do indeed use propyl gallate in 0.1% or less. Interestingly, propyl gallate is also used an additive to prevent lipid oxidation in foods.

Propyl Gallate references

  • Reference Module in Biomedical Sciences, 2014, ePublication
  • Physical Chemistry Chemical Physics, August 2013, pages 13,137-13,146
  • International Journal of Toxicology, 2007, pages 89-118

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

We have not yet rated this ingredient because we have not had a chance to review the research on it.