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ph-adjuster

Tromethamine

Generally safe·Strong evidence

A buffering agent used in tiny amounts to set a product's pH, most often alongside gel-forming polymers. It is graded low concern in published assessments at the levels used.

Questions

What is tromethamine used for in cosmetics?
Tromethamine is a pH buffer that neutralizes acids in products, keeping them at a skin-friendly pH. It's also called TRIS.
Is tromethamine safe?
Tromethamine is approved for use in cosmetics globally and carries no safety flags in published reviews. It's been used for decades in skincare and other applications.

Products with Tromethamine

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.