Science
Mechanism of Action
Isobutyl Methylbutyrate functions exclusively as a fragrance ingredient within skincare products. Its molecular structure, an ester, is responsible for the emission of a characteristic fruity and tropical aroma, primarily influencing the sensory experience of a formulation rather than directly interacting with skin physiology.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
No specific data regarding dusting behavior or potential for over-usage for active skin benefits is available, as its primary role is sensory.
The Formula
Formulation
Stability
As an ester, Isobutyl Methylbutyrate is prone to hydrolysis when exposed to extreme pH conditions, both highly acidic and highly basic, which may affect its long-term stability. While specific optimal pH data is not available, avoiding extreme pH is advisable. The ingredient is a flammable liquid and vapor, with reported flash points ranging from 32 °C to 50.5 °C.
Conflicts
- strong acids
- caustic solutions (strong bases)
- alkali metals
- hydrides
- strong oxidizing acids
Safety
Safety Profile
A RIFM Fragrance Material Safety Assessment, referencing the synonym 2-Methylpropyl 2-methylbutyrate, indicated no concerns for skin sensitization, photoirritation, or photoallergenicity. Toxicity assessments, based on read-across data from isobutyl isobutyrate, reported no mutagenic activity in the Ames test and no clastogenic effects. The Repeated Dose Toxicity NOAEL was established at 267 mg/kg/day, and the Reproductive Toxicity NOAEL at 800 mg/kg/day. A maximum usage level of 5.0000% within a fragrance concentrate is recommended.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Isobutyl Methylbutyrate serves primarily as a fragrance component to enhance the sensory appeal of formulations, offering no direct benefits to skin health or function.
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References
Sources