Skip to content

Surfactant

UNDECETH-5

CAS 34398-01-1 Updated
75

Safety score · 0–100

Fine

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

About

An ethoxylated fatty alcohol surfactant (5 PEG units) — helps blend oily ingredients into water. Mild at cosmetic levels; like all ethoxylates needs purification to limit 1,4-dioxane traces.

Skin benefits

  • Effective non-ionic surfactant
  • Solubilizes fragrance and oils
  • Mild on skin at cosmetic dilutions

Known concerns

  • Ethoxylated — possible 1,4-dioxane trace contamination
  • Use purified cosmetic grade only
  • Mild eye irritation potential

References

EU

EU CosIng database

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

Related surfactants

75
AMMONIUM COCOYL ISETHIONATE
Surfactant
 75
BIS-(METHOXY PEG-22 EPOXIDIZED SOYATE) PEG-13
Surfactant
 75
C11-15 ALKETH-7 CARBOXYLIC ACID (FORMERLY C11-15 PARETH-7 CARBOXYLIC ACID)
Surfactant
 75
C12-13 ALKETH-2 PHOSPHATE (FORMERLY C12-13 PARETH-2 PHOSPHATE)
Surfactant
 75
C12-13 ALKETH-8 CARBOXYLIC ACID (FORMERLY C12-13 PARETH-8 CARBOXYLIC ACID)
Surfactant
 75
C12-15 ALKETH-12 CARBOXYLIC ACID
Surfactant
 75
C12-15 ALKETH-3 PHOSPHATE (FORMERLY C12-15 PARETH-3 PHOSPHATE)
Surfactant
 75
C12-15 ALKETH-8 CARBOXYLIC ACID (FORMERLY C12-15 PARETH-8 CARBOXYLIC ACID)
Surfactant

Check your shelf

Find UNDECETH-5 in your products.

Scan any cosmetic product with LuxSense to see if it contains UNDECETH-5 and get a full ingredient breakdown with safety scores.

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.