Is 4-Isobutylresorcinol safe in cosmetics?
4-Isobutylresorcinol has a safety rating of "MODERATE" in our database. EU status: prohibited. US status: restricted.
Moderate
Cosmetic Ingredient
4-Isobutylresorcinol
INCI: 4-ISOBUTYLRESORCINOL
4-Isobutylresorcinol (CAS Not confirmed in my search (distinct from 4-Butylresorcinol CAS 18979-61-8)) is a cosmetic cosmetic ingredient functioning as Skin lightening / tyrosinase inhibition. EU Regulation 1223/2009 status: prohibited. Industrial safety data is also available in the chemical safety database.
Auto-generated CPSR Part A draft with source citations
CAS Number
Not confirmed in my search (distinct from 4-Butylresorcinol CAS 18979-61-8)
View industrial chemical safety profile →
Function
Skin lightening / tyrosinase inhibition
Safety Rating
MODERATE
Regulatory Status
EU EU Status
prohibited
US US Status
restricted
US Notes
Not specifically restricted by FDA
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for 4-Isobutylresorcinol.
Calculate MoS for your specific formulation with the MoS Calculator.
Expert Verdict
Expert safety assessment and concern-level summary for 4-Isobutylresorcinol.
Frequently Asked Questions
Is 4-Isobutylresorcinol allowed in the EU?
4-Isobutylresorcinol EU regulatory status: prohibited. This is based on EU Regulation 1223/2009 and its amendments.
What does 4-Isobutylresorcinol do in cosmetics?
4-Isobutylresorcinol functions as: Skin lightening / tyrosinase inhibition. It is classified as a cosmetic ingredient in our database. CAS number: Not confirmed in my search (distinct from 4-Butylresorcinol CAS 18979-61-8).
Compliance Tools
Check 4-Isobutylresorcinol compliance across multiple jurisdictions:
Ingredient Decoder
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Substance Compliance
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MoS Calculator
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Heavy Metal Limits
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