1, 2-Hexanediol



1, 2-Hexanediol at a glance

  • Synthetic multi-tasking ingredient
  • Works as a preservative, solvent, humectant, and texture enhancer
  • Active against bacteria, not molds or fungi
  • Considered non-sensitizing in amounts used in cosmetics

1, 2-Hexanediol description

A synthetic preservative and moisture-binding agent belonging to a class of agents known as higher molecular glycols. It is considered non-sensitising.

1, 2-Hexanediol references

  • CosmeticsInfo.org, Accessed March 2024, ePublication
  • International Journal of Toxicology, September-October 2012, pages 147S-168S
  • International Journal of Cosmetic Science, October 2011, pages 421-425
  • Cutaneous and Ocular Toxicology, Volume 28, 2009, pages 23-24

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.