Denatonium benzoate is an extremely bitter-tasting compound added to cosmetic and personal care formulations primarily to denature alcohol and deter accidental ingestion. It is a formulation additive rather than a therapeutic skin active.
| Reported effect | How often | Notes |
|---|---|---|
| Skin irritation | Rare | Mild localized irritation possible at higher concentrations or with prolonged contact. |
| Allergic contact dermatitis | Very rare | Sensitization reactions have been reported only in isolated cases. |
| Eye irritation | Uncommon | Can cause stinging or irritation on accidental ocular contact. |
| Bitter taste/oral irritation | Common | Intensely bitter taste if it contacts the lips or mouth, which is its intended deterrent effect. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.
Peer-reviewed papers on this ingredient, via PubMed.