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humectant · solvent · preservative

1,2-Hexanediol

Generally safe·Moderate evidence

A glycol used very widely in Korean and Western skincare as a lightweight humectant, solvent, and gentle preservative-booster, often in place of traditional preservatives. It has a low reported irritation rate at use levels and is graded low concern in published assessments.

Questions

Is hexanediol a harmful synthetic chemical?
Hexanediol is a synthetic humectant widely used in skincare to draw moisture into the skin. It has a low reported irritation rate at use levels. Published assessments have found it acceptable for use in cosmetic formulations.
Is hexanediol safe if I have sensitive skin?
Hexanediol is graded low concern in safety assessments, though as with any ingredient, individual sensitivity is possible. It is used frequently in hydrating serums and is generally well tolerated, but skin-on-skin testing is the best way to assess personal tolerance.

Products with 1,2-Hexanediol

References

Cosmetic information for general education, not medical advice. A verdict is a reading of the published evidence, never a guarantee for your skin: any ingredient can irritate someone, so patch test new products and see a professional if you react. Concern is graded on cited evidence, never on hazard-score lists. See how we score.