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BUTOXYETHYL STEARATE.

Valuable CAS 109-38-6 / SKIN CONDITIONING, SKIN CONDITIONING - EMOLLIENT

A sophisticated glycol ether-ester that serves as both an emollient and sensorial modifier in skincare formulations. This structural lipid enhances product texture while supporting barrier repair through sebum recovery and moisture retention mechanisms.

emollient skin conditioning viscosity controlling solvent

Science

Functions as a structural lipid that reinforces the skin's natural barrier by supporting sebum recovery and moisture retention. Its unique glycol ether-ester structure allows it to act as a pigment wetter and sensorial modifier, reducing tackiness of heavy oils while extending spreadability time during application.


Research

Medium confidence
Effective range 0.25–6%
Optimal

5%

Key findings

  1. 01 Significant enhancement of formulation spreadability and emulsion stability with smooth, non-greasy after-feel

Transparency

Not commonly dusted

Well-established emollient with clear functional benefits and regulatory approval; unlikely to be used for deceptive marketing purposes


The Formula

Solubility
Oil
Optimal pH 5 – 9
0 7 14

Stability

Exceptional thermal stability up to 205°C with high resistance to oxidative degradation. Vulnerable to hydrolysis under extreme pH conditions below 3.0 or above 10.0.

Conflicts

  • Strong oxidizing agents
  • Strong acids
  • Strong bases

Safety

CIR Status
Safe as used
Max tested
30%
Sensitization risk Low

Evaluated by CIR Expert Panel under Alkyl Esters group (2015) and approved for current usage practices. Also approved for pharmaceutical applications in FDA Inactive Ingredient Database.


Your Skin

Yes Normal
Yes Dry
No Oily
Yes Sensitive
Irritancy Low
Comedogenicity Unknown

Our Assessment

Valuable

A well-researched emollient that delivers proven sensorial benefits and barrier support with excellent safety profile and formulation stability.


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