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pH Adjuster

TRIETHANOLAMINE

CAS 102-71-6 Updated
42

Safety score · 0–100

Moderate

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

About

A common pH adjuster, also known as TEA. Decades of use, but it can react with certain preservatives to form carcinogenic nitrosamines. Safe by itself, problematic in the wrong combination.

Skin benefits

  • pH balance
  • Emulsification with fatty acids

Known concerns

  • Nitrosamine formation if combined with nitrosating agents
  • Eye/skin irritation at high %
  • EU restricts to non-leave-on / max levels

References

EU

EU CosIng database

European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.

PC

PubChem

U.S. NIH compound data, GHS hazard codes and toxicity literature.

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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.