Isobutyl Isostearate

INCI: ISOBUTYL ISOSTEARATE

CAS Number
Not widely published (specialty branched-chain emollient ester)
Function
Skin conditioning; emollient
Safety Rating
GOOD

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Permitted โ€” no specific CFR restriction

For full compliance data across 55 jurisdictions, use the Substance Compliance tool.

Safety Data

Margin of Safety (MoS)
adequate
Dermal Absorption
moderate
Sensitization
low

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Safety profile extrapolated from isopropyl isostearate with low comedogenic rating; recommend patch testing and supplier-provided safety data.

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Concern Level: Low

Frequently Asked Questions

Is Isobutyl Isostearate safe in cosmetics?

Safety profile extrapolated from isopropyl isostearate with low comedogenic rating; recommend patch testing and supplier-provided safety data. The EU classifies Isobutyl Isostearate as "permitted". Safety rating: GOOD.

Is Isobutyl Isostearate allowed in the EU?

Isobutyl Isostearate EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Isobutyl Isostearate do in cosmetics?

Isobutyl Isostearate functions as: Skin conditioning; emollient. It is classified as a cosmetic ingredient in our database. CAS number: Not widely published (specialty branched-chain emollient ester).

What is the Margin of Safety for Isobutyl Isostearate?

adequate The Margin of Safety (MoS) is calculated using SCCS methodology. A MoS above 100 is generally considered safe. Use the MoS Calculator tool to calculate MoS for your specific formulation and product category.

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