Is Fibroin safe in cosmetics?
Fibroin has a safety rating of "GOOD" in our database. EU status: permitted. US status: permitted.
GOOD
Cosmetic Ingredient
Fibroin
INCI: FIBROIN
Fibroin (CAS 9007-76-5) is a cosmetic cosmetic ingredient functioning as Bulking agent; skin and hair conditioning. EU Regulation 1223/2009 status: permitted. Industrial safety data is also available in the chemical safety database.
Function
Bulking agent; skin and hair conditioning
Editorial assessment
GOOD
Preliminary editorial note — not a computed safety verdict.
Regulatory Status
EU EU Status
permitted
US US Status
permitted
US Notes
Permitted — CIR reviewed (2015 safety assessment of silk proteins); fibroin-based sutures are FDA-approved medical devices
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for Fibroin.
Calculate MoS for your specific formulation with the MoS Calculator.
Function Categories & List Membership
Cosmetic/Chemical Function Categories
Filler
Editorial summary
Preliminary editorial summary for Fibroin — not a computed safety verdict. See the sourced toxicological data above.
Regulatory Flags
natural-origin
Chemical Function
Filler
Frequently Asked Questions
Is Fibroin allowed in the EU?
Fibroin EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does Fibroin do in cosmetics?
Fibroin functions as: Bulking agent; skin and hair conditioning. It is classified as a cosmetic ingredient in our database. CAS number: 9007-76-5.
Compliance Tools
Check Fibroin compliance across multiple jurisdictions:
Ingredient Decoder
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82 Allergen Checker
Check for EU declarable fragrance allergens
Substance Compliance
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MoS Calculator
Calculate Margin of Safety using SCCS methodology
Heavy Metal Limits
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