Science
Mechanism of Action
Isobutyl Stearate operates primarily as an emollient and skin conditioning agent. It forms a thin, non-greasy, hydrophobic film on the skin, which efficiently reduces transepidermal water loss. This action leads to softer, smoother skin with enhanced hydration and a more supple feel. Additionally, it acts as a lubricant, can increase formulation viscosity, function as a foam booster in surfactant-based products, and contribute opacifying properties.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Isobutyl Stearate is insoluble in water but demonstrates free solubility in alcohol, isopropyl alcohol, fixed oils, and mineral oil. No specific optimal pH range for its stability has been identified. It typically exists as a viscous pale yellow waxy solid, transitioning to a viscous liquid at temperatures exceeding 24°C.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel concluded that alkyl esters, including Isobutyl Stearate, are safe for use in cosmetic practices and concentrations when formulated to be non-irritating. The CIR finding is qualified as 'Safe for use in cosmetics, with qualifications'. No specific SCCS opinion or FDA status for Isobutyl Stearate was found in the available data.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Isobutyl Stearate is a valuable emollient and skin conditioning agent, effectively enhancing skin hydration and smoothness, though specific irritancy and comedogenicity data remain undetermined by INCIdecoder.
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References
Sources