Triethanolamine
Low RiskTriethanolamine (TEA) is an alkanolamine used as a pH adjuster and surfactant in cosmetics. The main practical concerns are skin/eye irritation at higher concentrations and the potential formation of nitrosamines if formulated with nitrosating agents (a formulation/impurity-control issue). It is not a typical pregnancy-specific concern at cosmetic use levels; overall risk is primarily local irritation/sensitisation in susceptible users.
Sources: CIR: Safety Assessment of Triethanolamine (TEA) and TEA-containing ingredients as used in cosmetics (Fiume et al., 2013); CIR Resource Document: N-Nitrosation and cosmetic ingredient safety; EU CosIng (Triethanolamine).





