TEA-PCA
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
The salt of triethanolamine and PCA (a key component of skin's natural moisturizing factors), used as a humectant and conditioning agent.
TEA-PCA is the triethanolamine salt of pyrrolidonecarboxylic acid (PCA), a natural amino acid derivative that is one of the principal components of the skin's Natural Moisturizing Factor (NMF). The salt form improves the ingredient's solubility and substantivity compared to free PCA. Functions as a humectant, hair conditioning agent, and skin conditioning agent. Concerns: triethanolamine (TEA) can react with nitrites or other nitrogen-containing compounds in formulations to form nitrosamines, which are potential carcinogens. However, TEA itself is not a nitrosamine and modern formulations carefully control nitrosamine formation. Restricted under EU Annex III at certain concentrations in specific product types.
Skin benefits
- Excellent humectant (binds water)
- Restores NMF components
- Conditions skin and hair
Known concerns
- Nitrosamine formation potential (TEA + nitrites)
- EU Annex III restricted in some product types
- Skin absorption of TEA
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
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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.