Ethoxydiglycol (diethylene glycol monoethyl ether) is a glycol ether used in cosmetic formulations primarily as a solvent and viscosity reducer that helps dissolve active ingredients and improve their skin penetration. It is considered a formulation aid rather than a therapeutic active.
| Reported effect | How often | Notes |
|---|---|---|
Mild skin irritation | Uncommon | Possible at higher concentrations, particularly on sensitive or compromised skin. |
Allergic contact dermatitis | Rare | Sensitization to glycol ethers is infrequently reported. |
Enhanced irritation from co-formulated actives | Uncommon | By increasing penetration, it may intensify the effects or irritation potential of other ingredients. |
Eye irritation | Rare | Can occur with accidental contact in concentrated form. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.
Peer-reviewed papers on this ingredient, via PubMed.