Hydroxy Tetramethylpiperidine Oxide
INCI: HYDROXY TETRAMETHYLPIPERIDINE OXIDE
Regulatory Status
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Safety Data
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Expert Verdict
Stable free radical antioxidant with adequate margin of safety; CIR Expert Panel concluded safe in cosmetics (2025 final report).
Frequently Asked Questions
Is Hydroxy Tetramethylpiperidine Oxide safe in cosmetics?
Stable free radical antioxidant with adequate margin of safety; CIR Expert Panel concluded safe in cosmetics (2025 final report). The EU classifies Hydroxy Tetramethylpiperidine Oxide as "permitted". Safety rating: GOOD.
Is Hydroxy Tetramethylpiperidine Oxide allowed in the EU?
Hydroxy Tetramethylpiperidine Oxide EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does Hydroxy Tetramethylpiperidine Oxide do in cosmetics?
Hydroxy Tetramethylpiperidine Oxide functions as: Antioxidant (stable nitroxide free radical scavenger). It is classified as a cosmetic ingredient in our database. CAS number: 2226-96-2 (TEMPOL / 4-Hydroxy-TEMPO).
What is the Margin of Safety for Hydroxy Tetramethylpiperidine Oxide?
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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