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BUTYL OLEATE.

Valuable CAS 142-77-8 / FRAGRANCE, SKIN CONDITIONING, SKIN CONDITIONING - EMOLLIENT

A fatty acid ester that serves dual functions as both a skin-conditioning emollient and penetration enhancer. This oleic acid derivative smooths skin texture while facilitating deeper delivery of active ingredients by temporarily modifying the skin barrier structure.

emollient solvent penetration enhancer

Science

Functions as an emollient by occupying intercellular spaces to create a smoother skin surface, while simultaneously acting as a penetration enhancer by temporarily disrupting the organized lipid structure of the stratum corneum to improve active ingredient absorption.


Research

Medium confidence
Effective range ≤1.5%
Optimal

1.5%

Key findings

  1. 01 CIR Safety Assessment (2015): 1.5% concentration demonstrated non-irritating and non-sensitizing properties in human repeat insult patch testing
  2. 02 Pharmaceutical research shows enhancement of corticosteroid bioavailability through stratum corneum lipid disruption

Transparency

Not commonly dusted

Primarily used as a functional ingredient at effective concentrations rather than for marketing purposes


The Formula

Solubility
Oil
Optimal pH 5 – 9
0 7 14

Stability

Demonstrates excellent stability in sealed containers under standard storage conditions, though susceptible to hydrolysis under extreme pH conditions due to ester bond

Conflicts

  • Strong oxidizing agents

Safety

CIR Status
Safe as used
Max tested
1.5%
Sensitization risk Low

Safety established when formulated to avoid irritation, with 1.5% representing the clinically validated non-irritating threshold


Your Skin

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

Our Assessment

Valuable

A well-researched multifunctional ingredient that effectively combines emollient properties with penetration enhancement capabilities at clinically validated concentrations.


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