Acetic Acid



No known benefits

Acetic Acid at a glance

  • Byproduct of fermentation
  • Main component of vinegar aside from water
  • Used to adjust skin care products’ pH
  • Has mild antimicrobial properties
  • Overuse or misuse can result in skin damage

Acetic Acid description

Acid found in vinegar, some fruits, and human sweat. It can be sensitising to skin, though it also has disinfecting properties.

Acetic Acid references

  • International Journal of Dermatology, July 2022, pages 804-811
  • Virginia Department of Health, Website
  • Australian Government Department of Climate Change, Energy, the Environment and Water, Website

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.


We couldn't find this in our ingredient dictionary. We log all missing ingredients and make continuous updates.

Not rated

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