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This is a fatty acid ester component, not a complete cosmetic ingredient. It usually indicates a derivative of isostearic acid, often found in emollients or thickeners.
No specific concern data available
Safety summary
This is a chemical fragment and does not have an independent safety profile. Its safety depends on the full ingredient it comprises, such as Pentaerythrityl Tetraisostearate.
For informational purposes only. This is not medical advice. Always patch test new products and consult a dermatologist for skin concerns.