No known benefits

Ester description

A compound formed from the reaction between an alcohol and an acid via the elimination of water. Triesters (groups of three esters) form the backbone of many fats, waxes, and oils that have emollient and skin-conditioning properties. Almost all of the esters used in cosmetic products are non-sensitising and in most cases are quite beneficial for dry skin.

Ester references

  • A Dictionary of Chemistry, Third Edition, Oxford Paperback, 1996

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.