1,2-Hexanediol is a glycol commonly used in skincare as a humectant and solvent that also provides preservative-boosting and mild antimicrobial properties, helping stabilize formulations. When combined with water it functions primarily as part of the formulation base rather than as a treatment active.
| Reported effect | How often | Notes |
|---|---|---|
| Mild skin irritation | Uncommon | Transient stinging or redness, more likely at higher concentrations or on compromised skin. |
| Contact dermatitis / sensitization | Rare | Allergic reactions are infrequently reported; patch testing can confirm. |
| Skin dryness | Rare | Possible with high concentrations due to solvent properties. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.
Peer-reviewed papers on this ingredient, via PubMed.