Is triethanolamine safe in cosmetics?

Triethanolamine (TEA) is used as a pH buffer and emulsifier in many creams and cleansers. Published safety reviews from CIR and others found no safety concern at typical use levels, though there is some debate about nitrosamine formation when combined with certain preservatives.

Why is triethanolamine controversial?

Old studies raised concerns about nitrosamine formation if TEA mixed with certain preservatives, but modern formulations are designed to avoid this. Current evidence suggests it's safe when used in well-designed formulas, though some brands avoid it anyway.

ph-adjuster

Triethanolamine

Generally safe·Strong evidence

A pH buffer that neutralizes acidic ingredients to maintain a skin-compatible formulation pH. Decades of safety data and modern manufacturing practices support its use at cosmetic concentrations.

Questions

Is triethanolamine safe in cosmetics?: Triethanolamine (TEA) is used as a pH buffer and emulsifier in many creams and cleansers. Published safety reviews from CIR and others found no safety concern at typical use levels, though there is some debate about nitrosamine formation when combined with certain preservatives.
Why is triethanolamine controversial?: Old studies raised concerns about nitrosamine formation if TEA mixed with certain preservatives, but modern formulations are designed to avoid this. Current evidence suggests it's safe when used in well-designed formulas, though some brands avoid it anyway.

Products with Triethanolamine

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.