Regulatory Status
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Safety Data
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Expert Verdict
Critical: If marketed as a preservative, EU Annex V listing is required. Described as effective against bacteria and fungi at very low doses — high potency requires careful use-level justification. No CIR/SCCS formal review. Acne treatment claims require regulatory attention (borderline drug/cosmetic)
Regulatory Flags
Frequently Asked Questions
Is Quaternium-73 safe in cosmetics?
Critical: If marketed as a preservative, EU Annex V listing is required. Described as effective against bacteria and fungi at very low doses — high potency requires careful use-level justification. No CIR/SCCS formal review. Acne treatment claims require regulatory attention (borderline drug/cosmetic) The EU classifies Quaternium-73 as "permitted". Safety rating: MODERATE.
Is Quaternium-73 allowed in the EU?
Quaternium-73 EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does Quaternium-73 do in cosmetics?
Quaternium-73 functions as: Antimicrobial/preservative agent, antistatic agent, bactericidal agent. It is classified as a cosmetic ingredient in our database. CAS number: 15763-48-1.
What is the Margin of Safety for Quaternium-73?
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.
Compliance Tools
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Related Ingredients
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