Is Bismuth Citrate safe in cosmetics?
Bismuth Citrate has a safety rating of "MODERATE" in our database. EU status: permitted. US status: restricted.
Moderate
Cosmetic Ingredient
Bismuth Citrate
INCI: BISMUTH CITRATE
Bismuth Citrate (CAS https://fragrancematerialsafetyresource.elsevier.com/sites/default/files/495-62-5.pdf) is a cosmetic cosmetic ingredient functioning as Hair colorant (progressive hair dye — reacts with hair sulfur/keratin to darken. EU Regulation 1223/2009 status: permitted, max 2.0%. Industrial safety data is also available in the chemical safety database.
Auto-generated CPSR Part A draft with source citations
CAS Number
https://fragrancematerialsafetyresource.elsevier.com/sites/default/files/495-62-5.pdf
View industrial chemical safety profile →
Function
Hair colorant (progressive hair dye — reacts with hair sulfur/keratin to darken over time)
Safety Rating
MODERATE
Regulatory Status
EU EU Status
permitted
EU Max Conc.
2.0%
US US Status
restricted
US Notes
FDA: Permanently listed color additive, exempt from certification (21 CFR 73.2110); restricted to cosmetics intended for coloring hair on the scalp only, NTE 0.5% (w/v); NTE 2.0% per updated regulations
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for Bismuth Citrate.
Calculate MoS for your specific formulation with the MoS Calculator.
Additional Ingredient Properties
1 property record from structured ingredient metadata.
hair_dye
{"cas_number": "813-93-4", "ingredient_class": "metallic_salt_dye", "chemical_class": "other", "molecular_weight_Da": "398.08", "color_result_on_hair": "Progressive dark brown", "shade_range": "brown", "primary_function": "direct_deposit", "requires_developer": "no", "deposit_only": "yes", "permanence": "progressive", "wash_fastness_shampoos": "15-20", "oxidation_mechanism": "metallic_binding", "h…
Expert Verdict
Expert safety assessment and concern-level summary for Bismuth Citrate.
Regulatory Flags
colorant
NOAEL Studies Summary
View details ->Public NOAEL study rows linked to Bismuth Citrate by CAS number or substance name.
Studies
9
Lowest NOAEL
200 mg/kg bw/day
Highest NOAEL
1200 mg/kg bw/day
ECHA_REACH_reach_study_results_dossiers_23-05-2023.zip
Frequently Asked Questions
Is Bismuth Citrate allowed in the EU?
Bismuth Citrate EU regulatory status: permitted. Maximum allowed concentration: 2.0%. This is based on EU Regulation 1223/2009 and its amendments.
What does Bismuth Citrate do in cosmetics?
Bismuth Citrate functions as: Hair colorant (progressive hair dye — reacts with hair sulfur/keratin to darken over time). It is classified as a cosmetic ingredient in our database. CAS number: https://fragrancematerialsafetyresource.elsevier.com/sites/default/files/495-62-5.pdf.
Compliance Tools
Check Bismuth Citrate 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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Is Bismuth Citrate in Your Products?
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