1,3-Propanediol is a naturally-derived glycol used in skincare as a humectant, solvent, and texture enhancer that helps boost skin hydration and improve the spreadability and stability of formulations. It is often produced via fermentation of corn sugar as a plant-based alternative to propylene glycol.
| Reported effect | How often | Notes |
|---|---|---|
Mild transient skin irritation or stinging | Uncommon | More likely on compromised or sensitive skin or at higher concentrations. |
Allergic contact dermatitis | Rare | Sensitization is reported infrequently; generally considered low irritation potential. |
Redness or transient burning sensation | Rare | Typically self-limiting and resolves after discontinuation. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.