Branched chain fatty acid; liquid at room temperature (unlike straight-chain stearic acid); good oxidative stability; does not crystallise; used in high-end emollient formulations; low sensitization risk
Function & Common Use
Emollient / Emulsifier Component
Emollient
High-performance emollients stable at high temperatures luxury cosmetics
Synthetic / Semi-synthetic
Concentration Limits
No limit
No limit
No specific 21 CFR cosmetic limit identified in source checked
No specific MFDS limit identified in source checked; verify if ingredient is used in a Korean functional cosmetic category
Pregnancy: No specific restriction identified in source checked; standard cosmetic use
Frequently Asked Questions
Is Isostearic Acid safe to use in skincare?
Isostearic Acid has a Low concern rating from The Clean Sheet. Branched chain fatty acid; liquid at room temperature (unlike straight-chain stearic acid); good oxidative stability; does not crystallise; used in high-end emollient formulations; low sensitization risk
Is Isostearic Acid allowed in India?
Isostearic Acid is currently classified as "Permitted" under Indian cosmetics regulations. No concentration limit is specified for India.
What is Isostearic Acid used for in cosmetics?
Isostearic Acid functions as: Emollient / Emulsifier Component. It is commonly found in: High-performance emollients stable at high temperatures luxury cosmetics.
Regulatory Status
Identifiers
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