Isostearic acid is a branched-chain fatty acid used in cosmetics as an emollient and binder. It helps to soften and smooth the skin, and can also improve the texture and stability of formulations. Its branched structure makes it less prone to oxidation than straight-chain fatty acids.
NoneFatty acidEvidence: Medium
BenefitModerate 1.5 / 4
Hydration
Barrier support
RiskLow 0.5 / 4
Sensitization
Irritation
Rated by SpottyLabs' ingredient methodology, independent of brands.
What it helps with
Skin conditioning
Emollient properties
Improves product texture
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What is the difference between isostearic acid and stearic acid?
Isostearic acid is a branched-chain fatty acid, while stearic acid is a straight-chain fatty acid. The branched structure of isostearic acid can make it more stable and less prone to oxidation in cosmetic formulations.
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