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CETEARETH-6.

Valuable CAS 68439-49-6 / SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYING

Ceteareth-6 is a versatile non-ionic emulsifier derived from fatty alcohols, designed to stabilize sophisticated oil-in-water formulations. It acts as a structural bridge in skincare, ensuring that lipid and aqueous components remain perfectly blended for a consistent, high-performance application.

Emulsifying Surfactant Cleansing

Science

As an amphiphilic ethoxylated fatty alcohol, Ceteareth-6 lowers the interfacial tension between water and oil phases. It organizes itself at the oil droplet surface with its hydrophilic PEG chain extending into the water and its lipophilic tail anchored in the oil, preventing phase separation and facilitating the uniform delivery of active ingredients.


Research

High confidence
Effective range 1.35–10%
Optimal

1.5%

Key findings

  1. 01 Confirmed as non-sensitizing in Human Repeat Insult Patch Tests (HRIPT).
  2. 02 Demonstrated minimal irritancy potential in single dermal exposure assessments.

Transparency

Not commonly dusted
Min. effective
1%
Red flag below
0.5%

As a functional emulsifier rather than a primary active, it is rarely 'dusted' for marketing claims. It is typically used at levels required for emulsion stability, usually between 1% and 5%.


The Formula

Solubility
Both
Optimal pH 3 – 12
0 7 14

Stability

Maintains exceptional stability across an expansive pH range; requires heating to approximately 38-44°C for oil-phase integration.

Synergies

  • Ceteareth-25 (combined for enhanced emulsion robustness)

Conflicts

  • Strong oxidizing agents
  • Highly anionic systems (may destabilize specific non-ionic/anionic ratios)

Safety

CIR Status
Safe as used
Max tested
10%
Pregnancy
Safe
Sensitization risk Low

Contraindicated for use on severely damaged or burnt skin due to the risk of systemic absorption of PEG compounds through a compromised barrier.


Your Skin

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Valuable

A highly reliable, non-irritating emulsifier essential for creating stable and aesthetically pleasing skincare textures.


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References