Other
TRIDECETH-50
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
Trideceth-50 is a cosmetic ingredient used in product formulations. Exercise caution due to limited available safety data.
Trideceth-50 is the polyethylene glycol 50-mole ether of tridecyl alcohol (C13 branched/linear alcohol). It is listed in CosIng with emulsifying and surfactant functions. The very high degree of ethoxylation (EO50) makes it highly water-soluble and primarily used as a solubilizer for fragrances, essential oils, or oil-soluble actives in aqueous formulations. EU cosmetics does not specifically restrict Trideceth-50 in Annex III. However, the high EO number and limited dedicated safety data result in a slightly more cautious score. The 1,4-dioxane impurity concern applies as with all ethoxylated surfactants.
Skin benefits
- Excellent solubilizer for clear aqueous formulations
- Effective for fragrance and active solubilization
- Used in toners, serums, and aqueous cosmetic products
Known concerns
- 1,4-dioxane trace contamination from high EO process
- Mild-to-moderate skin or eye irritation possible at high concentrations
- Limited dedicated toxicological safety data for this specific compound
References
EU CosIng database
European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.
Related others
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve, so always read the physical product label and consult a healthcare professional for personal concerns.