Skip to content

Other

PEG-15 STEARATE

CAS 9004-99-3
81

Safety score · 0–100

Good

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

A mid-high degree PEG stearate with 15 moles of EO, serving as a versatile O/W emulsifier with moderate skin compatibility.

PEG-15 Stearate is the polyethylene glycol (15 mol EO average) ester of stearic acid. The moderate-to-high ethoxylation gives it an HLB of approximately 15, making it a capable O/W emulsifier. It is listed in the EU Cosmetics Regulation without restriction and is considered safe for use in both rinse-off and leave-on cosmetic products. The PEG chain length reduces the irritant potential of stearic acid, though residual EO and 1,4-dioxane must remain within SCCS-recommended limits.

Skin benefits

  • O/W emulsifier for lotions and creams
  • Conditions and smooths skin
  • Good balance of efficacy and mildness

Known concerns

  • Potential trace EO/1,4-dioxane contamination from manufacturing

References

EU

EU CosIng database

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

Related others

Check your shelf

Find PEG-15 STEARATE in your products.

Scan any cosmetic product with LuxSense to see if it contains PEG-15 STEARATE 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, so always read the physical product label and consult a healthcare professional for personal concerns.